diff -r 2bb754abd467 -r 0ffb4e86fcc9 userlibandfileserver/fileserver/sfile/sf_cache_man.cpp
--- a/userlibandfileserver/fileserver/sfile/sf_cache_man.cpp	Mon Jun 21 17:12:14 2010 +0300
+++ b/userlibandfileserver/fileserver/sfile/sf_cache_man.cpp	Thu Jul 15 20:11:42 2010 +0300
@@ -177,7 +177,7 @@
 	iMaxLockedSegments = TGlobalFileCacheSettings::MaxLockedSize() >> KSegmentSizeLog2;
 
 #ifdef __SIMULATE_LOCK_FAILURES__
-	iSimulateLockFailureMode = ETrue;
+	iSimulateLockFailureMode = EFalse;	// off by default unless switched on by KControlIoSimulateLockFailureMode
 #endif
 	}