--- src/kernel/qapplication_x11.cpp
+++ src/kernel/qapplication_x11.cpp
@@ -3972,7 +3972,7 @@
 // Keyboard event translation
 //
 
-static int translateButtonState( int s )
+int qt_x11_translateButtonState( int s )
 {
     int bst = 0;
     if ( s & Button1Mask )
@@ -4038,7 +4038,7 @@
 	pos.ry() = lastMotion.y;
 	globalPos.rx() = lastMotion.x_root;
 	globalPos.ry() = lastMotion.y_root;
-	state = translateButtonState( lastMotion.state );
+	state = qt_x11_translateButtonState( lastMotion.state );
 	if ( qt_button_down && (state & (LeftButton |
 					 MidButton |
 					 RightButton ) ) == 0 )
@@ -4062,7 +4062,7 @@
 	pos.ry() = xevent->xcrossing.y;
 	globalPos.rx() = xevent->xcrossing.x_root;
 	globalPos.ry() = xevent->xcrossing.y_root;
-	state = translateButtonState( xevent->xcrossing.state );
+	state = qt_x11_translateButtonState( xevent->xcrossing.state );
 	if ( qt_button_down && (state & (LeftButton |
 					 MidButton |
 					 RightButton ) ) == 0 )
@@ -4074,7 +4074,7 @@
 	pos.ry() = event->xbutton.y;
 	globalPos.rx() = event->xbutton.x_root;
 	globalPos.ry() = event->xbutton.y_root;
-	state = translateButtonState( event->xbutton.state );
+	state = qt_x11_translateButtonState( event->xbutton.state );
 	switch ( event->xbutton.button ) {
 	case Button1: button = LeftButton; break;
 	case Button2: button = MidButton; break;
@@ -5020,7 +5020,7 @@
     XKeyEvent xkeyevent = event->xkey;
 
     // save the modifier state, we will use the keystate uint later by passing
-    // it to translateButtonState
+    // it to qt_x11_translateButtonState
     uint keystate = event->xkey.state;
     // remove the modifiers where mode_switch exists... HPUX machines seem
     // to have alt *AND* mode_switch both in Mod1Mask, which causes
@@ -5134,7 +5134,7 @@
     }
 #endif // !QT_NO_XIM
 
-    state = translateButtonState( keystate );
+    state = qt_x11_translateButtonState( keystate );
 
     static int directionKeyEvent = 0;
     if ( qt_use_rtl_extensions && type == QEvent::KeyRelease ) {
--- src/kernel/qdnd_x11.cpp
+++ src/kernel/qdnd_x11.cpp
@@ -115,6 +115,8 @@
 Atom qt_xdnd_type_list;
 const int qt_xdnd_version = 4;
 
+extern int qt_x11_translateButtonState( int s );
+
 // Actions
 //
 // The Xdnd spec allows for user-defined actions. This could be implemented
@@ -199,6 +201,8 @@
 static int qt_xdnd_current_screen = -1;
 // state of dragging... true if dragging, false if not
 bool qt_xdnd_dragging = FALSE;
+// need to check state of keyboard modifiers
+static bool need_modifiers_check = FALSE;
 
 // dict of payload data, sorted by type atom
 static QIntDict<QByteArray> * qt_xdnd_target_data = 0;
@@ -887,8 +891,20 @@
 
 void QDragManager::timerEvent( QTimerEvent* e )
 {
-    if ( e->timerId() == heartbeat && qt_xdnd_source_sameanswer.isNull() )
-	move( QCursor::pos() );
+    if ( e->timerId() == heartbeat ) {
+        if( need_modifiers_check ) {
+            Window root, child;
+            int root_x, root_y, win_x, win_y;
+            unsigned int mask;
+            XQueryPointer( qt_xdisplay(), qt_xrootwin( qt_xdnd_current_screen ),
+                &root, &child, &root_x, &root_y, &win_x, &win_y, &mask );
+            if( updateMode( (ButtonState)qt_x11_translateButtonState( mask )))
+                qt_xdnd_source_sameanswer = QRect(); // force move
+        }
+        need_modifiers_check = TRUE;
+        if( qt_xdnd_source_sameanswer.isNull() )
+	    move( QCursor::pos() );
+    }
 }
 
 static bool qt_xdnd_was_move = false;
@@ -956,6 +972,7 @@
 	    updateMode(me->stateAfter());
 	    move( me->globalPos() );
 	}
+        need_modifiers_check = FALSE;
 	return TRUE;
     } else if ( e->type() == QEvent::MouseButtonRelease ) {
 	qApp->removeEventFilter( this );
@@ -994,9 +1011,11 @@
 	    beingCancelled = FALSE;
 	    qApp->exit_loop();
 	} else {
-	    updateMode(ke->stateAfter());
-	    qt_xdnd_source_sameanswer = QRect(); // force move
-	    move( QCursor::pos() );
+	    if( updateMode(ke->stateAfter())) {
+	        qt_xdnd_source_sameanswer = QRect(); // force move
+	        move( QCursor::pos() );
+            }
+            need_modifiers_check = FALSE;
 	}
 	return TRUE; // Eat all key events
     }
@@ -1023,10 +1042,10 @@
 
 
 static Qt::ButtonState oldstate;
-void QDragManager::updateMode( ButtonState newstate )
+bool QDragManager::updateMode( ButtonState newstate )
 {
     if ( newstate == oldstate )
-	return;
+	return false;
     const int both = ShiftButton|ControlButton;
     if ( (newstate & both) == both ) {
 	global_requested_action = QDropEvent::Link;
@@ -1050,6 +1069,7 @@
 	}
     }
     oldstate = newstate;
+    return true;
 }
 
 
@@ -1754,6 +1774,7 @@
     qt_xdnd_source_sameanswer = QRect();
     move(QCursor::pos());
     heartbeat = startTimer(200);
+    need_modifiers_check = FALSE;
 
 #ifndef QT_NO_CURSOR
     qApp->setOverrideCursor( arrowCursor );
--- src/kernel/qdragobject.h
+++ src/kernel/qdragobject.h
@@ -249,7 +249,7 @@
 
 private:
     QDragObject * object;
-    void updateMode( ButtonState newstate );
+    bool updateMode( ButtonState newstate );
     void updateCursor();
 #if defined(Q_WS_X11)
     void createCursors();