diff --git a/kwin/clients/b2/b2client.cpp b/kwin/clients/b2/b2client.cpp
index adb594282..179eee0eb 100644
--- a/kwin/clients/b2/b2client.cpp
+++ b/kwin/clients/b2/b2client.cpp
@@ -26,6 +26,7 @@
 #include <tqtooltip.h>
 
 #include <X11/Xlib.h>
+#include <X11/Xatom.h>
 
 namespace B2 {
 
@@ -432,6 +433,22 @@ void B2Client::init()
     titlebar->installEventFilter(this);
 }
 
+bool B2Client::isModalSystemNotification()
+{
+    unsigned char *data = 0;
+    Atom actual;
+    int format, result;
+    unsigned long n, left;
+    Atom kde_wm_system_modal_notification;
+    kde_wm_system_modal_notification = XInternAtom(qt_xdisplay(), "_KDE_WM_MODAL_SYS_NOTIFICATION", False);
+    result = XGetWindowProperty(qt_xdisplay(), windowId(), kde_wm_system_modal_notification, 0L, 1L, False, XA_CARDINAL, &actual, &format, &n, &left, /*(unsigned char **)*/ &data);
+    if (result == Success && data != None && format == 32 )
+        {
+        return TRUE;
+        }
+    return FALSE;
+}
+
 void B2Client::addButtons(const TQString& s, const TQString tips[],
                           B2Titlebar* tb, TQBoxLayout* titleLayout)
 {
@@ -441,6 +458,7 @@ void B2Client::addButtons(const TQString& s, const TQString tips[],
     for (unsigned int i = 0; i < s.length(); i++) {
         switch (s[i].latin1()) {
 	case 'M':  // Menu button
+	  if (!isModalSystemNotification()) {
 	    if (!button[BtnMenu]) {
 		button[BtnMenu] = new B2Button(this, tb, tips[BtnMenu], 
 			Qt::LeftButton | Qt::RightButton);
@@ -450,8 +468,10 @@ void B2Client::addButtons(const TQString& s, const TQString tips[],
 			this, TQT_SLOT(menuButtonPressed()));
 		titleLayout->addWidget(button[BtnMenu]);
 	    }
-	    break;
+	  }
+	  break;
 	case 'S':  // Sticky button
+	  if (!isModalSystemNotification()) {
 	    if (!button[BtnSticky]) {
 		button[BtnSticky] = new B2Button(this, tb, tips[BtnSticky]);
 		button[BtnSticky]->setPixmaps(P_PINUP);
@@ -461,7 +481,8 @@ void B2Client::addButtons(const TQString& s, const TQString tips[],
 			this, TQT_SLOT(toggleOnAllDesktops()));
 		titleLayout->addWidget(button[BtnSticky]);
 	    }
-	    break;
+	  }
+	  break;
 	case 'H':  // Help button
 	    if (providesContextHelp() && (!button[BtnHelp])) {
 		button[BtnHelp] = new B2Button(this, tb, tips[BtnHelp]);
diff --git a/kwin/clients/b2/b2client.h b/kwin/clients/b2/b2client.h
index ddddf0c0a..d1062348e 100644
--- a/kwin/clients/b2/b2client.h
+++ b/kwin/clients/b2/b2client.h
@@ -133,6 +133,7 @@ private:
     void positionButtons();
     void calcHiddenButtons();
     bool mustDrawHandle() const;
+    bool isModalSystemNotification();
     
     enum ButtonType{BtnMenu=0, BtnSticky, BtnIconify, BtnMax, BtnClose,
         BtnHelp, BtnShade, BtnResize, BtnCount};
diff --git a/kwin/clients/keramik/keramik.cpp b/kwin/clients/keramik/keramik.cpp
index 089c7ed69..5edf98230 100644
--- a/kwin/clients/keramik/keramik.cpp
+++ b/kwin/clients/keramik/keramik.cpp
@@ -33,6 +33,7 @@
 #include <tqlabel.h>
 
 #include <X11/Xlib.h>
+#include <X11/Xatom.h>
 
 #include "keramik.h"
 #include "keramik.moc"
@@ -1023,6 +1024,21 @@ void KeramikClient::reset( unsigned long )
 	}
 }
 
+bool KeramikClient::isModalSystemNotification()
+{
+    unsigned char *data = 0;
+    Atom actual;
+    int format, result;
+    unsigned long n, left;
+    Atom kde_wm_system_modal_notification;
+    kde_wm_system_modal_notification = XInternAtom(qt_xdisplay(), "_KDE_WM_MODAL_SYS_NOTIFICATION", False);
+    result = XGetWindowProperty(qt_xdisplay(), windowId(), kde_wm_system_modal_notification, 0L, 1L, False, XA_CARDINAL, &actual, &format, &n, &left, /*(unsigned char **)*/ &data);
+    if (result == Success && data != None && format == 32 )
+        {
+        return TRUE;
+        }
+    return FALSE;
+}
 
 void KeramikClient::addButtons( TQBoxLayout *layout, const TQString &s )
 {
@@ -1032,22 +1048,26 @@ void KeramikClient::addButtons( TQBoxLayout *layout, const TQString &s )
 		{
 			// Menu button
 			case 'M' :
-				if ( !button[MenuButton] ) {
-					button[MenuButton] = new KeramikButton( this, "menu", MenuButton, i18n("Menu"), Qt::LeftButton|Qt::RightButton );
-					connect( button[MenuButton], TQT_SIGNAL( pressed() ), TQT_SLOT( menuButtonPressed() ) );
-					layout->addWidget( button[MenuButton] );
+				if (!isModalSystemNotification()) {
+					if ( !button[MenuButton] ) {
+						button[MenuButton] = new KeramikButton( this, "menu", MenuButton, i18n("Menu"), Qt::LeftButton|Qt::RightButton );
+						connect( button[MenuButton], TQT_SIGNAL( pressed() ), TQT_SLOT( menuButtonPressed() ) );
+						layout->addWidget( button[MenuButton] );
+					}
 				}
 				break;
 
 			// OnAllDesktops button
 			case 'S' :
-				if ( !button[OnAllDesktopsButton] ) {
-					button[OnAllDesktopsButton] = new KeramikButton( this, "on_all_desktops",
-							OnAllDesktopsButton, isOnAllDesktops()?i18n("Not on all desktops"):i18n("On all desktops") );
-					if(isOnAllDesktops())
-						button[OnAllDesktopsButton]->toggle();
-					connect( button[OnAllDesktopsButton], TQT_SIGNAL( clicked() ), TQT_SLOT( toggleOnAllDesktops() ) );
-					layout->addWidget( button[OnAllDesktopsButton] );
+				if (!isModalSystemNotification()) {
+					if ( !button[OnAllDesktopsButton] ) {
+						button[OnAllDesktopsButton] = new KeramikButton( this, "on_all_desktops",
+								OnAllDesktopsButton, isOnAllDesktops()?i18n("Not on all desktops"):i18n("On all desktops") );
+						if(isOnAllDesktops())
+							button[OnAllDesktopsButton]->toggle();
+						connect( button[OnAllDesktopsButton], TQT_SIGNAL( clicked() ), TQT_SLOT( toggleOnAllDesktops() ) );
+						layout->addWidget( button[OnAllDesktopsButton] );
+					}
 				}
 				break;
 
diff --git a/kwin/clients/keramik/keramik.h b/kwin/clients/keramik/keramik.h
index e4b1df5f5..8e4a98518 100644
--- a/kwin/clients/keramik/keramik.h
+++ b/kwin/clients/keramik/keramik.h
@@ -174,6 +174,7 @@ namespace Keramik {
 			inline bool maximizedVertical() const {
 				return ( maximizeMode() & MaximizeVertical );
 			}
+			bool isModalSystemNotification();
 
 		private slots:
 			void menuButtonPressed();