Index: /trunk/src/VBox/ValidationKit/tests/unittests/tdUnitTest1.py
===================================================================
--- /trunk/src/VBox/ValidationKit/tests/unittests/tdUnitTest1.py	(revision 54692)
+++ /trunk/src/VBox/ValidationKit/tests/unittests/tdUnitTest1.py	(revision 54693)
@@ -219,5 +219,6 @@
     kasHardened = [
         "testcase/tstIntNet-1",
-        "testcase/tstRTR0ThreadPreemptionDriver",
+        "testcase/tstR0ThreadPreemptionDriver", # VBox 4.3
+        "testcase/tstRTR0ThreadPreemptionDriver", 
         "testcase/tstRTR0MemUserKernelDriver",
         "testcase/tstRTR0SemMutexDriver",