Index: /trunk/src/VBox/VMM/VMMAll/PDMAllCritSect.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/PDMAllCritSect.cpp	(revision 38058)
+++ /trunk/src/VBox/VMM/VMMAll/PDMAllCritSect.cpp	(revision 38059)
@@ -508,5 +508,5 @@
     if (RT_UNLIKELY(pCritSect->s.Core.NativeThreadOwner != hNativeSelf))
     {
-#if 0
+#if 1
         AssertMsgFailed(("%p %s: %p != %p; cLockers=%d cNestings=%d\n", pCritSect, R3STRING(pCritSect->s.pszName),
                          pCritSect->s.Core.NativeThreadOwner, hNativeSelf,