--- node.module	2008-01-07 02:31:26.000000000 +0100
+++ node_new.module	2008-01-25 15:12:00.000000000 +0100
@@ -2707,6 +2707,7 @@ function node_access($op, $node = NULL) 
   }
   // If the node is in a restricted format, disallow editing.
   if ($op == 'update' && !filter_access($node->format)) {
+    watchdog('content', 'User do not have access to the filter(s) used on this page.', WATCHDOG_NOTICE, NULL);
     return FALSE;
   }