--- a/src/gui/widgets/qmainwindowlayout_mac.mm	Mon Mar 15 12:43:09 2010 +0200
+++ b/src/gui/widgets/qmainwindowlayout_mac.mm	Thu Apr 08 14:19:33 2010 +0300
@@ -463,6 +463,8 @@
             NSToolbarItem *item = static_cast<NSToolbarItem *>(it.key());
             [[qt_mac_window_for(layoutState.mainWindow->window()) toolbar]
                 removeItemAtIndex:toolbarItemsCopy.indexOf(item)];
+             unifiedToolbarHash.remove(item);
+             qtoolbarsInUnifiedToolbarList.removeAll(toolbar);
 #endif
             break;
         }