diff --git a/clients/b2/config/config.cpp b/clients/b2/config/config.cpp
index 0c15d68d1f..aa8abfc1fd 100644
--- a/clients/b2/config/config.cpp
+++ b/clients/b2/config/config.cpp
@@ -74,7 +74,7 @@ B2Config::B2Config(KConfig *conf, QWidget *parent)
     //actionsGB->setOrientation(Qt::Horizontal);
     QLabel *menuDblClickLabel = new QLabel(actionsGB);
     menuDblClickLabel->setText(i18n("Double click on menu button:"));
-    menuDblClickOp = new QComboBox(actionsGB);
+    menuDblClickOp = new KComboBox(actionsGB);
     menuDblClickOp->addItem(i18n("Do Nothing"));
     menuDblClickOp->addItem(i18n("Minimize Window"));
     menuDblClickOp->addItem(i18n("Shade Window"));
diff --git a/clients/b2/config/config.h b/clients/b2/config/config.h
index a0f2c836c6..d075a3d71f 100644
--- a/clients/b2/config/config.h
+++ b/clients/b2/config/config.h
@@ -27,7 +27,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <QCheckBox>
 #include <QGroupBox>
 #include <QLabel>
-#include <QComboBox>
+#include <KComboBox>
 #include <kconfig.h>
 
 class B2Config: public QObject
@@ -55,7 +55,7 @@ private:
     QCheckBox *cbColorBorder;
     QCheckBox *showGrabHandleCb;
     QGroupBox *actionsGB;
-    QComboBox *menuDblClickOp;
+    KComboBox *menuDblClickOp;
     QWidget *gb;
 };
 
diff --git a/clients/kde2/kde2.cpp b/clients/kde2/kde2.cpp
index bdcba4c330..33aaafd56c 100644
--- a/clients/kde2/kde2.cpp
+++ b/clients/kde2/kde2.cpp
@@ -9,7 +9,7 @@
  	Draws mini titlebars for tool windows.
  	Many features are now customizable.
  
- 	drawColorBitmaps orignally from kdefx:
+ 	drawColorBitmaps originally from kdefx:
  	  Copyright (C) 1999 Daniel M. Duley <mosfet@kde.org>
 
 This program is free software; you can redistribute it and/or modify
diff --git a/clients/quartz/quartz.cpp b/clients/quartz/quartz.cpp
index 4eb4085573..8898d78b8b 100644
--- a/clients/quartz/quartz.cpp
+++ b/clients/quartz/quartz.cpp
@@ -12,7 +12,7 @@
   Includes mini titlebars for ToolWindow Support.
   Button positions are now customizable.
  
- 	drawColorBitmaps orignally from kdefx:
+ 	drawColorBitmaps originally from kdefx:
  	  Copyright (C) 1999 Daniel M. Duley <mosfet@kde.org>
  
 This program is free software; you can redistribute it and/or modify
diff --git a/compositingprefs.cpp b/compositingprefs.cpp
index a818297740..7dcfa545e4 100644
--- a/compositingprefs.cpp
+++ b/compositingprefs.cpp
@@ -240,7 +240,7 @@ void CompositingPrefs::detectDriverAndVersion()
     kDebug( 1212 ) << "GL version is" << mGLVersion;
     kDebug( 1212 ) << "XGL:" << ( mXgl ? "yes" : "no" );
 
-    if( mGLRenderer.startsWith( "Mesa DRI Intel" ) || mGLRenderer.startsWith( "Mesa DRI Mobile Intel" ))
+    if( mGLRenderer.startsWith( "Mesa DRI Intel" ) || mGLRenderer.startsWith( "Mesa DRI Mobile Intel" )) // krazy:exclude=strings
         {
         mDriver = "intel";
         QStringList words = mGLRenderer.split(' ');
@@ -266,7 +266,7 @@ void CompositingPrefs::detectDriverAndVersion()
             mVersion = Version( versionParts[1].mid( 1, versionParts[1].length() -2 ) );
             }
         }
-    else if( mGLRenderer.startsWith( "Mesa DRI R" ))
+    else if( mGLRenderer.startsWith( "Mesa DRI R" )) // krazy:exclude=strings
         {
         mDriver = "radeon";
         mVersion = Version( mGLRenderer.split(' ')[ 3 ] );
@@ -325,7 +325,7 @@ void CompositingPrefs::applyDriverSpecificOptions()
         }
     else if( mDriver == "radeon" )
         { // radeon r200 only ?
-        if( mGLRenderer.startsWith( "Mesa DRI R200" ) && mVersion >= Version( "20060602" ))
+        if( mGLRenderer.startsWith( "Mesa DRI R200" ) && mVersion >= Version( "20060602" )) // krazy:exclude=strings
             {
             kDebug( 1212 ) << "radeon r200 >= 20060602, enabling compositing";
             mEnableCompositing = true;
diff --git a/data/update_default_rules.cpp b/data/update_default_rules.cpp
index d0b85c6cd4..0f4b7873ff 100644
--- a/data/update_default_rules.cpp
+++ b/data/update_default_rules.cpp
@@ -37,7 +37,7 @@ int main( int argc, char* argv[] )
     KAboutData about( "kwin_update_default_rules", "kwin", KLocalizedString(), 0 );
     KCmdLineArgs::init( argc, argv, &about );
     KComponentData inst( &about );
-    Q_UNUSED( KGlobal::locale() ); // jump-start locales to get to translated desriptions
+    Q_UNUSED( KGlobal::locale() ); // jump-start locales to get to translated descriptions
     QString file = KStandardDirs::locate( "data", QString( "kwin/default_rules/" ) + argv[ 1 ] );
     if( file.isEmpty())
         {
diff --git a/effects.cpp b/effects.cpp
index e3e9081ee9..c40c8ca855 100644
--- a/effects.cpp
+++ b/effects.cpp
@@ -891,7 +891,7 @@ bool EffectsHandlerImpl::loadEffect( const QString& name )
     assert( current_build_quads == 0 );
     assert( current_transform == 0 );
 
-    if( !name.startsWith("kwin4_effect_") )
+    if( !name.toLatin1().startsWith("kwin4_effect_") )
         kWarning( 1212 ) << "Effect names usually have kwin4_effect_ prefix" ;
 
     // Make sure a single effect won't be loaded multiple times
diff --git a/effects/slideback/slideback.cpp b/effects/slideback/slideback.cpp
index e51b3c33ce..1f7884c98a 100644
--- a/effects/slideback/slideback.cpp
+++ b/effects/slideback/slideback.cpp
@@ -55,7 +55,7 @@ void SlideBackEffect::windowActivated( EffectWindow* w )
         return;
         }
 
-    if( unminimizedWindow == w ){  // A window was activated by beeing unminimized. Don't trigger SlideBack.
+    if( unminimizedWindow == w ){  // A window was activated by being unminimized. Don't trigger SlideBack.
         unminimizedWindow = NULL;
         updateStackingOrder();
         return;
@@ -193,7 +193,7 @@ void SlideBackEffect::paintWindow( EffectWindow *w, int mask, QRegion region, Wi
     if( stackingOrderChanged() && ( w == newTopWindow() ) && !disabled )
         {
         /* This can happen because of two reasons:
-           - a window has received the focus earlier without beeing raised and is raised now. -> call windowActivated() now
+           - a window has received the focus earlier without being raised and is raised now. -> call windowActivated() now
            - paintWindow() is called with a new stackingOrder before activateWindow(). Bug? -> don't draw the overlapping content;*/
         foreach( EffectWindow *tmp, oldStackingOrder )
             {
diff --git a/kcmkwin/kwincompositing/main.cpp b/kcmkwin/kwincompositing/main.cpp
index 961815be24..f23436e0de 100644
--- a/kcmkwin/kwincompositing/main.cpp
+++ b/kcmkwin/kwincompositing/main.cpp
@@ -366,7 +366,7 @@ void KWinCompositingConfig::loadGeneralTab()
 
 void KWinCompositingConfig::setupCompositingState( bool active, bool enabled )
     {
-    if( getenv( "KDE_FAILSAFE" ))
+    if( !qgetenv( "KDE_FAILSAFE" ).isNull() )
         enabled = false;
     // compositing state
     QString stateIcon;
@@ -645,7 +645,7 @@ void KWinCompositingConfig::save()
 
     // This assumes that this KCM is running with the same environment variables as KWin
     // TODO: Detect KWIN_COMPOSE=N as well
-    if( getenv( "KDE_FAILSAFE" ) && ui.useCompositing->isChecked() )
+    if( !qgetenv( "KDE_FAILSAFE" ).isNull() && ui.useCompositing->isChecked() )
         {
         KMessageBox::sorry( this, i18n(
             "Your settings have been saved but as KDE is currently running in failsafe "
diff --git a/kcmkwin/kwindecoration/kwindecoration.cpp b/kcmkwin/kwindecoration/kwindecoration.cpp
index f8b4147771..ab9754414e 100644
--- a/kcmkwin/kwindecoration/kwindecoration.cpp
+++ b/kcmkwin/kwindecoration/kwindecoration.cpp
@@ -35,7 +35,8 @@
 #include <QGroupBox>
 #include <QGridLayout>
 #include <QCheckBox>
-#include <QTabWidget>
+#include <KComboBox>
+#include <KTabWidget>
 
 #include <QLabel>
 #include <QFile>
@@ -88,7 +89,7 @@ KWinDecorationModule::KWinDecorationModule(QWidget* parent, const QVariantList &
 //	cbUseMiniWindows = new QCheckBox( i18n( "Render mini &titlebars for all windows"), checkGroup );
 //	QWhatsThis::add( cbUseMiniWindows, i18n( "Note that this option is not available on all styles yet" ) );
 
-	tabWidget = new QTabWidget( this );
+	tabWidget = new KTabWidget( this );
 	layout->addWidget( tabWidget );
 
 	// Page 1 (General Options)
@@ -114,7 +115,7 @@ KWinDecorationModule::KWinDecorationModule(QWidget* parent, const QVariantList &
 
 	// Border size chooser
 	lBorder = new QLabel (i18n("B&order size:"), pluginSettingsGrp);
-	cBorder = new QComboBox(pluginSettingsGrp);
+	cBorder = new KComboBox(pluginSettingsGrp);
 	lBorder->setBuddy(cBorder);
 	cBorder->setWhatsThis( i18n( "Use this combobox to change the border size of the decoration." ));
 	lBorder->hide();
@@ -226,7 +227,7 @@ void KWinDecorationModule::findDecorations()
 					KDesktopFile desktopFile(filename);
 					QString libName = desktopFile.desktopGroup().readEntry("X-KDE-Library");
 
-					if (!libName.isEmpty() && libName.startsWith( "kwin3_" ))
+					if (!libName.isEmpty() && libName.toLatin1().startsWith( "kwin3_" ))
 					{
 						DecorationInfo di;
 						di.name = desktopFile.readName();
@@ -589,7 +590,7 @@ void KWinDecorationModule::checkSupportedBorderSizes()
 
 QString KWinDecorationModule::styleToConfigLib( QString& styleLib )
 {
-        if( styleLib.startsWith( "kwin3_" ))
+        if( styleLib.toLatin1().startsWith( "kwin3_" ))
             return "kwin_" + styleLib.mid( 6 ) + "_config";
         else
             return styleLib + "_config";
diff --git a/kcmkwin/kwindecoration/kwindecoration.h b/kcmkwin/kwindecoration/kwindecoration.h
index 2a22c83228..89a81231fd 100644
--- a/kcmkwin/kwindecoration/kwindecoration.h
+++ b/kcmkwin/kwindecoration/kwindecoration.h
@@ -44,7 +44,8 @@
 class KComboBox;
 class QCheckBox;
 class QLabel;
-class QTabWidget;
+class KComboBox;
+class KTabWidget;
 class KVBox;
 
 class KDecorationPlugins;
@@ -98,7 +99,7 @@ class KWinDecorationModule : public KCModule, public KDecorationDefines
 		static int borderSizeToIndex( BorderSize size, QList< BorderSize > sizes );
 		static BorderSize indexToBorderSize( int index, QList< BorderSize > sizes );
 
-		QTabWidget* tabWidget;
+		KTabWidget* tabWidget;
 
 		// Page 1
 		KComboBox* decorationList;
@@ -112,7 +113,7 @@ class KWinDecorationModule : public KCModule, public KDecorationDefines
 	//	QCheckBox* cbUseMiniWindows;
 		QCheckBox* cbShowToolTips;
 		QLabel*    lBorder;
-		QComboBox* cBorder;
+		KComboBox* cBorder;
 		BorderSize border_size;
 
 		QObject* pluginObject;
diff --git a/kcmkwin/kwinoptions/main.cpp b/kcmkwin/kwinoptions/main.cpp
index 2c726292d8..c0a8fafbb3 100644
--- a/kcmkwin/kwinoptions/main.cpp
+++ b/kcmkwin/kwinoptions/main.cpp
@@ -73,7 +73,7 @@ KWinOptions::KWinOptions(QWidget *parent, const QVariantList &)
 
   QVBoxLayout *layout = new QVBoxLayout(this);
   layout->setMargin(0);
-  tab = new QTabWidget(this);
+  tab = new KTabWidget(this);
   layout->addWidget(tab);
 
   mFocus = new KFocusConfig(false, mConfig, componentData(), this);
@@ -186,7 +186,7 @@ KActionsOptions::KActionsOptions(QWidget *parent, const QVariantList &)
 
   QVBoxLayout *layout = new QVBoxLayout(this);
   layout->setMargin(0);
-  tab = new QTabWidget(this);
+  tab = new KTabWidget(this);
   layout->addWidget(tab);
 
   mTitleBarActions = new KTitleBarActionsConfig(false, mConfig, componentData(), this);
diff --git a/kcmkwin/kwinoptions/main.h b/kcmkwin/kwinoptions/main.h
index c490a376d0..a1c6945bdf 100644
--- a/kcmkwin/kwinoptions/main.h
+++ b/kcmkwin/kwinoptions/main.h
@@ -25,7 +25,7 @@
 #ifndef __MAIN_H__
 #define __MAIN_H__
 
-#include <QTabWidget>
+#include <KTabWidget>
 #include <kcmodule.h>
 
 class KConfig;
@@ -57,7 +57,7 @@ protected slots:
 
 private:
 
-  QTabWidget   *tab;
+  KTabWidget   *tab;
 
   KFocusConfig *mFocus;
   KTitleBarActionsConfig *mTitleBarActions;
@@ -88,7 +88,7 @@ protected slots:
 
 private:
 
-  QTabWidget   *tab;
+  KTabWidget   *tab;
 
   KTitleBarActionsConfig *mTitleBarActions;
   KWindowActionsConfig *mWindowActions;
diff --git a/kcmkwin/kwinoptions/mouse.cpp b/kcmkwin/kwinoptions/mouse.cpp
index 19096f4b1b..0c084c6bb0 100644
--- a/kcmkwin/kwinoptions/mouse.cpp
+++ b/kcmkwin/kwinoptions/mouse.cpp
@@ -20,7 +20,7 @@
 #include "mouse.h"
 
 #include <QLabel>
-#include <QComboBox>
+#include <KComboBox>
 
 #include <QLayout>
 #include <QSizePolicy>
@@ -154,7 +154,7 @@ KTitleBarActionsConfig::KTitleBarActionsConfig (bool _standAlone, KConfig *_conf
   QGridLayout *gLayout = new QGridLayout(titlebarActions);
   layout->addWidget( titlebarActions );
 
-  QComboBox* combo = new QComboBox(this);
+  KComboBox* combo = new KComboBox(this);
   combo->addItem(i18n("Maximize"));
   combo->addItem(i18n("Maximize (vertical only)"));
   combo->addItem(i18n("Maximize (horizontal only)"));
@@ -177,7 +177,7 @@ KTitleBarActionsConfig::KTitleBarActionsConfig (bool _standAlone, KConfig *_conf
 
 /** Mouse Wheel Events  **************/
   // Titlebar and frame mouse Wheel  
-  QComboBox* comboW = new QComboBox(this);
+  KComboBox* comboW = new KComboBox(this);
   comboW->addItem(i18n("Raise/Lower"));
   comboW->addItem(i18n("Shade/Unshade"));
   comboW->addItem(i18n("Maximize/Restore"));
@@ -245,7 +245,7 @@ KTitleBarActionsConfig::KTitleBarActionsConfig (bool _standAlone, KConfig *_conf
                                " or the frame of an active window.") );
 
   // Titlebar and frame, active, mouse button 1
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
   grid->addWidget(combo, 1, 1);
   combo->addItem(i18n("Raise"));
@@ -277,7 +277,7 @@ KTitleBarActionsConfig::KTitleBarActionsConfig (bool _standAlone, KConfig *_conf
         << i18n("Close")
         << i18n("Nothing");
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
   grid->addWidget(combo, 2, 1);
   combo->addItems(items);
@@ -286,7 +286,7 @@ KTitleBarActionsConfig::KTitleBarActionsConfig (bool _standAlone, KConfig *_conf
   combo->setWhatsThis( i18n("Behavior on <em>middle</em> click into the titlebar or frame of an <em>active</em> window."));
 
   // Titlebar and frame, active, mouse button 3
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
   grid->addWidget(combo, 3, 1);
   combo->addItems(items);
@@ -320,7 +320,7 @@ KTitleBarActionsConfig::KTitleBarActionsConfig (bool _standAlone, KConfig *_conf
          << i18n("Close")
          << i18n("Nothing");
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
   grid->addWidget(combo, 1, 2);
   combo->addItems(items);
@@ -328,7 +328,7 @@ KTitleBarActionsConfig::KTitleBarActionsConfig (bool _standAlone, KConfig *_conf
   coTiInAct1 = combo;
   combo->setWhatsThis( txtButton1);
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
   grid->addWidget(combo, 2, 2);
   combo->addItems(items);
@@ -336,7 +336,7 @@ KTitleBarActionsConfig::KTitleBarActionsConfig (bool _standAlone, KConfig *_conf
   coTiInAct2 = combo;
   combo->setWhatsThis( i18n("Behavior on <em>middle</em> click into the titlebar or frame of an <em>inactive</em> window."));
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
   grid->addWidget(combo, 3, 2);
   combo->addItems(items);
@@ -514,7 +514,7 @@ static int tbl_txt_lookup( const char* const arr[], const char* txt )
     return 0;
 }
 
-void KTitleBarActionsConfig::setComboText( QComboBox* combo, const char*txt )
+void KTitleBarActionsConfig::setComboText( KComboBox* combo, const char*txt )
 {
     if( combo == coTiDbl )
         combo->setCurrentIndex( tbl_txt_lookup( tbl_TiDbl, txt ));
@@ -680,7 +680,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
           << i18n("Activate")
           << i18n("Activate & Raise");
 
-  QComboBox* combo = new QComboBox(box);
+  KComboBox* combo = new KComboBox(box);
   coWin1 = combo;
   combo->addItems(items);
   connect(combo, SIGNAL(activated(int)), SLOT(changed()));
@@ -692,7 +692,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
   gridLayout->addWidget(label, 0, 0);
   gridLayout->addWidget(combo, 0, 1);
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->addItems(items);
   connect(combo, SIGNAL(activated(int)), SLOT(changed()));
   coWin2 = combo;
@@ -704,7 +704,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
   gridLayout->addWidget(label, 1, 0);
   gridLayout->addWidget(combo, 1, 1);
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->addItems(items);
   connect(combo, SIGNAL(activated(int)), SLOT(changed()));
   coWin3 = combo;
@@ -721,7 +721,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
           << i18n("Activate & Scroll")
           << i18n("Activate, Raise & Scroll");
   
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->addItems(items);
   connect(combo, SIGNAL(activated(int)), SLOT(changed()));
   coWinWheel = combo;
@@ -770,7 +770,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
   }
 
   // Combo's
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->addItem(i18n("Meta"));
   combo->addItem(i18n("Alt"));
   connect(combo, SIGNAL(activated(int)), SLOT(changed()));
@@ -796,7 +796,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
         << i18n("Minimize")
         << i18n("Nothing");
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->addItems(items);
   connect(combo, SIGNAL(activated(int)), SLOT(changed()));
   coAll1 = combo;
@@ -809,7 +809,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
   gridLayout->addWidget(combo, 0, 1);
 
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->addItems(items);
   connect(combo, SIGNAL(activated(int)), SLOT(changed()));
   coAll2 = combo;
@@ -821,7 +821,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
   gridLayout->addWidget(label, 1, 0);
   gridLayout->addWidget(combo, 1, 1);
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->addItems(items);
   connect(combo, SIGNAL(activated(int)), SLOT(changed()));
   coAll3 =  combo;
@@ -834,7 +834,7 @@ KWindowActionsConfig::KWindowActionsConfig (bool _standAlone, KConfig *_config,
   gridLayout->addWidget(combo, 2, 1);
 
 
-  combo = new QComboBox(box);
+  combo = new KComboBox(box);
   combo->addItem(i18n("Raise/Lower"));
   combo->addItem(i18n("Shade/Unshade"));
   combo->addItem(i18n("Maximize/Restore"));
@@ -864,7 +864,7 @@ KWindowActionsConfig::~KWindowActionsConfig()
     delete config;
 }
 
-void KWindowActionsConfig::setComboText( QComboBox* combo, const char*txt )
+void KWindowActionsConfig::setComboText( KComboBox* combo, const char*txt )
 {
     if( combo == coWin1 || combo == coWin2 || combo == coWin3 )
         combo->setCurrentIndex( tbl_txt_lookup( tbl_Win, txt ));
diff --git a/kcmkwin/kwinoptions/mouse.h b/kcmkwin/kwinoptions/mouse.h
index c75743f6f4..eee08217b7 100644
--- a/kcmkwin/kwinoptions/mouse.h
+++ b/kcmkwin/kwinoptions/mouse.h
@@ -25,17 +25,17 @@
 class KConfig;
 
 #include <kcmodule.h>
-#include <QComboBox>
+#include <KComboBox>
 #include <klocale.h>
 
 
-class ToolTipComboBox: public QComboBox
+class ToolTipComboBox: public KComboBox
 {
   Q_OBJECT
     
 public:
   ToolTipComboBox(QWidget * owner, char const * const * toolTips_)
-    : QComboBox(owner)
+    : KComboBox(owner)
     , toolTips(toolTips_) {}
 
 public slots:
@@ -64,15 +64,15 @@ public slots:
 	void changed() { emit KCModule::changed(true); }
 
 private:
-  QComboBox* coTiDbl;
+  KComboBox* coTiDbl;
 
-  QComboBox* coTiAct1;
-  QComboBox* coTiAct2;
-  QComboBox* coTiAct3;
-  QComboBox* coTiAct4;  
-  QComboBox* coTiInAct1;
-  QComboBox* coTiInAct2;
-  QComboBox* coTiInAct3;
+  KComboBox* coTiAct1;
+  KComboBox* coTiAct2;
+  KComboBox* coTiAct3;
+  KComboBox* coTiAct4;  
+  KComboBox* coTiInAct1;
+  KComboBox* coTiInAct2;
+  KComboBox* coTiInAct3;
 
   ToolTipComboBox * coMax[3];
 
@@ -85,7 +85,7 @@ private:
   const char* functionTiInAc(int);
   const char* functionMax(int);
 
-  void setComboText(QComboBox* combo, const char* text);
+  void setComboText(KComboBox* combo, const char* text);
   const char* fixup( const char* s );
 
 private slots:
@@ -110,16 +110,16 @@ public slots:
 	void changed() { emit KCModule::changed(true); }
 
 private:
-  QComboBox* coWin1;
-  QComboBox* coWin2;
-  QComboBox* coWin3;
-  QComboBox* coWinWheel;
+  KComboBox* coWin1;
+  KComboBox* coWin2;
+  KComboBox* coWin3;
+  KComboBox* coWinWheel;
 
-  QComboBox* coAllKey;
-  QComboBox* coAll1;
-  QComboBox* coAll2;
-  QComboBox* coAll3;
-  QComboBox* coAllW;
+  KComboBox* coAllKey;
+  KComboBox* coAll1;
+  KComboBox* coAll2;
+  KComboBox* coAll3;
+  KComboBox* coAllW;
 
   KConfig *config;
   bool standAlone;
@@ -130,7 +130,7 @@ private:
   const char* functionAll(int);
   const char* functionAllW(int);
 
-  void setComboText(QComboBox* combo, const char* text);
+  void setComboText(KComboBox* combo, const char* text);
   const char* fixup( const char* s );
 };
 
diff --git a/kcmkwin/kwinoptions/windows.cpp b/kcmkwin/kwinoptions/windows.cpp
index 005130cb4b..5fa38f6c4b 100644
--- a/kcmkwin/kwinoptions/windows.cpp
+++ b/kcmkwin/kwinoptions/windows.cpp
@@ -27,7 +27,7 @@
 #include <QCheckBox>
 #include <QRadioButton>
 #include <QLabel>
-#include <QComboBox>
+#include <KComboBox>
 #include <QHBoxLayout>
 #include <QFormLayout>
 #include <QtDBus/QtDBus>
@@ -117,7 +117,7 @@ KFocusConfig::KFocusConfig (bool _standAlone, KConfig *_config, const KComponent
 
     fcsBox->setLayout( gLay );
 
-    focusStealing = new QComboBox( this );
+    focusStealing = new KComboBox( this );
     focusStealing->addItem( i18nc( "Focus Stealing Prevention Level", "None" ));
     focusStealing->addItem( i18nc( "Focus Stealing Prevention Level", "Low" ));
     focusStealing->addItem( i18nc( "Focus Stealing Prevention Level", "Medium" ));
@@ -151,7 +151,7 @@ KFocusConfig::KFocusConfig (bool _standAlone, KConfig *_config, const KComponent
     gLay->addWidget(label, 0, 0, 1, 2);
     gLay->addWidget(focusStealing, 0, 2);
 
-    focusCombo =  new QComboBox(fcsBox);
+    focusCombo =  new KComboBox(fcsBox);
     focusCombo->setEditable( false );
     focusCombo->addItem(i18n("Click to Focus"), CLICK_TO_FOCUS);
     focusCombo->addItem(i18n("Focus Follows Mouse"), FOCUS_FOLLOWS_MOUSE);
@@ -652,7 +652,7 @@ KAdvancedConfig::KAdvancedConfig (bool _standAlone, KConfig *_config, const KCom
     QGridLayout *vLay = new QGridLayout();
     lay->addLayout( vLay );
 
-    placementCombo = new QComboBox(this);
+    placementCombo = new KComboBox(this);
     placementCombo->setEditable( false );
     placementCombo->addItem(i18n("Smart"), SMART_PLACEMENT);
     placementCombo->addItem(i18n("Maximizing"), MAXIMIZING_PLACEMENT);
diff --git a/kcmkwin/kwinoptions/windows.h b/kcmkwin/kwinoptions/windows.h
index a227a5ac6a..a56e89dfc3 100644
--- a/kcmkwin/kwinoptions/windows.h
+++ b/kcmkwin/kwinoptions/windows.h
@@ -29,7 +29,7 @@
 class QRadioButton;
 class QCheckBox;
 class QPushButton;
-class QComboBox;
+class KComboBox;
 class QGroupBox;
 class QLabel;
 class QSlider;
@@ -107,11 +107,11 @@ private:
   void setShowPopupinfo(bool);
 
   void setFocusStealing( int );
-  QComboBox* focusStealing;
+  KComboBox* focusStealing;
 
   //QGroupBox *fcsBox;
   QWidget* fcsBox;
-  QComboBox *focusCombo;
+  KComboBox *focusCombo;
   QLabel *autoRaiseOnLabel;
   QCheckBox *autoRaiseOn;
   QLabel *delayFocusOnLabel;
@@ -217,7 +217,7 @@ private:
 
   int getPlacement( void ); //CT
   void setPlacement(int); //CT
-  QComboBox *placementCombo;
+  KComboBox *placementCombo;
 };
 
 #endif // KKWMWINDOWS_H
diff --git a/lib/kdecoration_plugins_p.cpp b/lib/kdecoration_plugins_p.cpp
index bd4a9db0de..ba1731aaf2 100644
--- a/lib/kdecoration_plugins_p.cpp
+++ b/lib/kdecoration_plugins_p.cpp
@@ -106,7 +106,7 @@ bool KDecorationPlugins::loadPlugin( QString nameStr )
         nameStr = group.readEntry("PluginLib", defaultPlugin );
         }
     // make sure people can switch between HEAD and kwin_iii branch
-    if( nameStr.startsWith( "kwin_" ))
+    if( nameStr.toLatin1().startsWith( "kwin_" ))
 	nameStr = "kwin3_" + nameStr.mid( 5 );
 
     KLibrary *oldLibrary = library;
diff --git a/lib/kwineffects.h b/lib/kwineffects.h
index 42526e56b1..66b64b365a 100644
--- a/lib/kwineffects.h
+++ b/lib/kwineffects.h
@@ -565,7 +565,7 @@ class KWIN_EXPORT EffectsHandler
          */
         virtual int currentDesktop() const = 0;
         /**
-         * @returns Total number of desktops currently in existance.
+         * @returns Total number of desktops currently in existence.
          */
         virtual int numberOfDesktops() const = 0;
         /**
diff --git a/main.cpp b/main.cpp
index 8cdbbfb5b7..c5346a9518 100644
--- a/main.cpp
+++ b/main.cpp
@@ -43,8 +43,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <kdialog.h>
 #include <kstandarddirs.h>
 #include <kdebug.h>
+#include <kde_file.h>
 #include <QLabel>
-#include <QComboBox>
+#include <KComboBox>
 #include <QVBoxLayout>
 
 #include "atoms.h"
@@ -208,7 +209,7 @@ class AlternativeWMDialog : public KDialog
                 "You can select another window manager to run:" );
             QLabel* textLabel = new QLabel( text, mainWidget );
             layout->addWidget( textLabel );
-            wmList = new QComboBox( mainWidget );
+            wmList = new KComboBox( mainWidget );
             wmList->setEditable( true );
             layout->addWidget( wmList );
 
@@ -233,7 +234,7 @@ class AlternativeWMDialog : public KDialog
             { return wmList->currentText(); }
 
     private:
-        QComboBox* wmList;
+        KComboBox* wmList;
 };
 
 int Application::crashes = 0;
@@ -418,7 +419,7 @@ KDE_EXPORT int kdemain( int argc, char * argv[] )
         { // We only do the multihead fork if we are not restored by the session
           // manager, since the session manager will register multiple kwins,
           // one for each screen...
-        QByteArray multiHead = getenv( "KDE_MULTIHEAD" );
+        QByteArray multiHead = qgetenv( "KDE_MULTIHEAD" );
         if( multiHead.toLower() == "true" )
             {
             Display* dpy = XOpenDisplay( NULL );
@@ -488,15 +489,15 @@ KDE_EXPORT int kdemain( int argc, char * argv[] )
     args.add( "crashes <n>", ki18n( "Indicate that KWin has recently crashed n times" ));
     KCmdLineArgs::addCmdLineOptions( args );
 
-    if( signal( SIGTERM, KWin::sighandler ) == SIG_IGN )
-        signal( SIGTERM, SIG_IGN );
-    if( signal( SIGINT, KWin::sighandler ) == SIG_IGN )
-        signal( SIGINT, SIG_IGN );
-    if( signal( SIGHUP, KWin::sighandler ) == SIG_IGN )
-        signal( SIGHUP, SIG_IGN );
+    if( KDE_signal( SIGTERM, KWin::sighandler ) == SIG_IGN )
+        KDE_signal( SIGTERM, SIG_IGN );
+    if( KDE_signal( SIGINT, KWin::sighandler ) == SIG_IGN )
+        KDE_signal( SIGINT, SIG_IGN );
+    if( KDE_signal( SIGHUP, KWin::sighandler ) == SIG_IGN )
+        KDE_signal( SIGHUP, SIG_IGN );
 
     // HACK: This is needed for AIGLX
-    if( qstrcmp( getenv( "KWIN_DIRECT_GL" ), "1" ) != 0 )
+    if( qstrcmp( qgetenv( "KWIN_DIRECT_GL" ), "1" ) != 0 )
         setenv( "LIBGL_ALWAYS_INDIRECT","1", true );
 
     // HACK: this is needed to work around a Qt4.4.0RC1 bug (#157659)
@@ -508,7 +509,7 @@ KDE_EXPORT int kdemain( int argc, char * argv[] )
     KGlobal::locale()->insertCatalog( "kwin_effects" );
 
     // Announce when KWIN_DIRECT_GL is set for above HACK
-    if( qstrcmp( getenv( "KWIN_DIRECT_GL" ), "1" ) == 0 )
+    if( qstrcmp( qgetenv( "KWIN_DIRECT_GL" ), "1" ) == 0 )
         kDebug( 1212 ) << "KWIN_DIRECT_GL set, not forcing LIBGL_ALWAYS_INDIRECT=1";
 
     fcntl( XConnectionNumber( KWin::display() ), F_SETFD, 1 );
diff --git a/nvidiahack.cpp b/nvidiahack.cpp
index 9bb9936a32..e29e7cb038 100644
--- a/nvidiahack.cpp
+++ b/nvidiahack.cpp
@@ -18,6 +18,8 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *********************************************************************/
 
+// krazy:skip
+
 /*
 
  The only purpose of this file is to be later in the link order than
diff --git a/workspace.h b/workspace.h
index 525f819eba..448bb050b3 100644
--- a/workspace.h
+++ b/workspace.h
@@ -172,7 +172,7 @@ class Workspace : public QObject, public KDecorationDefines
 
     public:
         /**
-         * @returns Total number of desktops currently in existance.
+         * @returns Total number of desktops currently in existence.
          */
         int numberOfDesktops() const;
         /**