Index: /trunk/src/VBox/Frontends/VirtualBox/src/globals/UIDesktopWidgetWatchdog.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/globals/UIDesktopWidgetWatchdog.cpp	(revision 60701)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/globals/UIDesktopWidgetWatchdog.cpp	(revision 60702)
@@ -188,4 +188,5 @@
     /* Forget finished worker: */
     AssertPtrReturnVoid(m_availableGeometryWorkers.value(iHostScreenIndex));
+    m_availableGeometryWorkers.value(iHostScreenIndex)->disconnect();
     m_availableGeometryWorkers.value(iHostScreenIndex)->deleteLater();
     m_availableGeometryWorkers[iHostScreenIndex] = 0;