Index: /trunk/src/VBox/Main/src-server/PerformanceImpl.cpp
===================================================================
--- /trunk/src/VBox/Main/src-server/PerformanceImpl.cpp	(revision 65200)
+++ /trunk/src/VBox/Main/src-server/PerformanceImpl.cpp	(revision 65201)
@@ -222,6 +222,4 @@
     }
 
-    mMagic = 0;
-
     /* Destroy unregistered metrics */
     BaseMetricList::iterator it;
@@ -246,4 +244,7 @@
     AssertMsgRC(vrc, ("Failed to destroy resource usage sampling timer (%Rra)\n", vrc));
     m.sampler = NULL;
+
+    /* Invalidate the magic now. */
+    mMagic = 0;
 
     //delete m.factory;