? db_write_record_return_values_fix.patch
? includes/common.modified.inc
? sites/all/modules
? sites/default/files
? sites/default/settings.php
Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.756.2.98
diff -u -p -r1.756.2.98 common.inc
--- includes/common.inc	6 Sep 2010 11:13:27 -0000	1.756.2.98
+++ includes/common.inc	8 Oct 2010 16:43:24 -0000
@@ -3534,6 +3534,10 @@ function drupal_write_record($table, &$o
         $object->$field = db_last_insert_id($table, $field);
       }
     }
+    // If this was an update, check that a row was actually updated
+    if ($return == SAVED_UPDATED && db_affected_rows() < 1) {
+      $return = FALSE;
+    }
   }
   else {
     $return = FALSE;