diff -r 73ea206103e6 -r 43365a9b78a3 kernel/eka/memmodel/epoc/flexible/mmu/mpagearray.cpp
--- a/kernel/eka/memmodel/epoc/flexible/mmu/mpagearray.cpp	Wed Jun 23 19:44:53 2010 +0300
+++ b/kernel/eka/memmodel/epoc/flexible/mmu/mpagearray.cpp	Tue Jul 06 15:50:07 2010 +0300
@@ -1158,6 +1158,7 @@
 		return NULL;
 
 	*p = (page & ~EStateMask) | EMoving;
+	s->Lock();
 
 	aPageList.Set(iSegments, aIndex, aIndex+1);