Index: modules/block/block.admin.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/block/block.admin.inc,v
retrieving revision 1.14.2.3
diff -u -p -r1.14.2.3 block.admin.inc
--- modules/block/block.admin.inc	20 Oct 2008 13:02:29 -0000	1.14.2.3
+++ modules/block/block.admin.inc	25 Oct 2008 21:00:40 -0000
@@ -40,7 +40,7 @@ function block_admin_display_form(&$form
 
   // Build form tree
   $form = array(
-    '#action' => arg(3) ? url('admin/build/block/list/'. $theme_key) : url('admin/build/block'),
+    '#action' => arg(4) ? url('admin/build/block/list/'. $theme_key) : url('admin/build/block'),
     '#tree' => TRUE,
   );