Index: modules/block/block.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/block/block.module,v
retrieving revision 1.246.2.11
diff -u -p -r1.246.2.11 block.module
--- modules/block/block.module	14 Jan 2009 05:43:04 -0000	1.246.2.11
+++ modules/block/block.module	9 Mar 2010 07:53:54 -0000
@@ -536,6 +536,7 @@ function block_box_delete($bid = 0) {
 function block_box_delete_submit($form_id, $form_values) {
   db_query('DELETE FROM {boxes} WHERE bid = %d', $form_values['bid']);
   db_query("DELETE FROM {blocks} WHERE module = 'block' AND delta = '%s'", $form_values['bid']);
+  db_query("DELETE FROM {blocks_roles} WHERE module = 'block' AND delta = '%s'", $form_values['bid']);
   drupal_set_message(t('The block %name has been removed.', array('%name' => $form_values['info'])));
   cache_clear_all();
   return 'admin/build/block';