--- src/dialogs/qdialog.cpp
+++ src/dialogs/qdialog.cpp
@@ -670,6 +670,11 @@
 
 #if defined(Q_WS_X11)
 extern "C" { int XSetTransientForHint( Display *, unsigned long, unsigned long ); }
+#include <private/qt_x11_p.h>
+#undef FocusIn
+// defined in qapplication_x11.cpp
+extern Atom qt_net_wm_full_placement;
+extern bool qt_net_supports(Atom atom);
 #endif // Q_WS_X11
 
 /*!
@@ -691,10 +696,12 @@
 
     if ( !did_resize )
 	adjustSize();
-    if ( has_relpos && !did_move ) {
-	adjustPositionInternal( parentWidget(), TRUE );
-    } else if ( !did_move ) {
-	adjustPositionInternal( parentWidget() );
+    if( !qt_net_supports( qt_net_wm_full_placement )) {
+	if ( has_relpos && !did_move ) {
+	    adjustPositionInternal( parentWidget(), TRUE );
+	} else if ( !did_move ) {
+	    adjustPositionInternal( parentWidget() );
+	}
     }
 
     if (windowState() != state)
--- src/kernel/qapplication_x11.cpp
+++ src/kernel/qapplication_x11.cpp
@@ -273,6 +273,7 @@
 Atom		qt_net_wm_state_stays_on_top	= 0;	// KDE extension
 Atom		qt_net_wm_pid		= 0;
 Atom		qt_net_wm_user_time	= 0;
+Atom            qt_net_wm_full_placement = 0; // KDE extension
 // Enlightenment support
 Atom		qt_enlightenment_desktop	= 0;
 
@@ -1989,6 +1990,7 @@
 			    &qt_net_wm_state_stays_on_top );
 	qt_x11_intern_atom( "_NET_WM_PID", &qt_net_wm_pid );
 	qt_x11_intern_atom( "_NET_WM_USER_TIME", &qt_net_wm_user_time );
+	qt_x11_intern_atom( "_NET_WM_FULL_PLACEMENT", &qt_net_wm_full_placement );
 	qt_x11_intern_atom( "ENLIGHTENMENT_DESKTOP", &qt_enlightenment_desktop );
 	qt_x11_intern_atom( "_NET_WM_NAME", &qt_net_wm_name );
 	qt_x11_intern_atom( "_NET_WM_ICON_NAME", &qt_net_wm_icon_name );