diff -r b72c6db6890b -r 5dc02b23752f src/gui/widgets/qmainwindow.cpp
--- a/src/gui/widgets/qmainwindow.cpp	Wed Jun 23 19:07:03 2010 +0300
+++ b/src/gui/widgets/qmainwindow.cpp	Tue Jul 06 15:10:48 2010 +0300
@@ -1374,6 +1374,9 @@
 #endif // QT_NO_STATUSTIP
 
         case QEvent::StyleChange:
+#ifndef QT_NO_DOCKWIDGET
+            d->layout->layoutState.dockAreaLayout.styleChangedEvent();
+#endif
             if (!d->explicitIconSize)
                 setIconSize(QSize());
             break;
@@ -1453,7 +1456,8 @@
         return;
 
     // ### Disable the unified toolbar when using anything but the native graphics system.
-    if (windowSurface())
+    // ### Disable when using alien widgets as well
+    if (windowSurface() || testAttribute(Qt::WA_NativeWindow) == false)
         return;
 
     d->useHIToolBar = set;
@@ -1535,11 +1539,15 @@
 
 #ifndef QT_NO_MENU
     QMenu *popup = createPopupMenu();
-    if (popup && !popup->isEmpty()) {
-        popup->exec(event->globalPos());
-        event->accept();
+    if (popup) {
+        if (!popup->isEmpty()) {
+            popup->setAttribute(Qt::WA_DeleteOnClose);
+            popup->popup(event->globalPos());
+            event->accept();
+        } else {
+            delete popup;
+        }
     }
-    delete popup;
 #endif
 }
 #endif // QT_NO_CONTEXTMENU