diff -r dde9fe1e0ce3 -r 6356adcb652c server/session.py
--- a/server/session.py	Mon Sep 23 11:13:28 2013 +0200
+++ b/server/session.py	Thu Sep 26 11:53:13 2013 +0200
@@ -1442,6 +1442,7 @@
         self.user._cw = self # XXX remove when "vreg = user._cw.vreg" hack in entity.py is gone
         if not safe:
             self.disable_hook_categories('integrity')
+            self._tx.ctx_count += 1
 
     def __enter__(self):
         return self