Index: search_config.module
===================================================================
--- search_config.module	(revision 4457)
+++ search_config.module	(working copy)
@@ -40,7 +40,7 @@
     unset($form['search_theme_form_keys']);
   }
 
-  if ($form_id == 'search_form') {
+  if ($form_id == 'search_form' && $form['module']['#value'] == 'node') {
     $default_search = variable_get('search_config_default_search', 'node');
 
     // Keywords