--- old/src/share/vm/runtime/objectMonitor.cpp	Thu Jan 17 10:09:38 2013
+++ new/src/share/vm/runtime/objectMonitor.cpp	Thu Jan 17 10:09:38 2013
@@ -653,8 +653,7 @@
     assert (_succ != Self, "invariant") ;
     if (_Responsible == Self) {
         _Responsible = NULL ;
-        // Dekker pivot-point.
-        // Consider OrderAccess::storeload() here
+        OrderAccess::fence(); // Dekker pivot-point
 
         // We may leave threads on cxq|EntryList without a designated
         // "Responsible" thread.  This is benign.  When this thread subsequently
@@ -674,10 +673,6 @@
         //
         // The MEMBAR, above, prevents the LD of cxq|EntryList in the subsequent
         // exit operation from floating above the ST Responsible=null.
-        //
-        // In *practice* however, EnterI() is always followed by some atomic
-        // operation such as the decrement of _count in ::enter().  Those atomics
-        // obviate the need for the explicit MEMBAR, above.
     }
 
     // We've acquired ownership with CAS().