=== modified file 'includes/bootstrap.inc'
--- includes/bootstrap.inc	
+++ includes/bootstrap.inc	
@@ -138,6 +138,7 @@ function conf_init() {
   global $db_url, $db_prefix, $base_url, $base_path, $base_root, $conf;
 
   $conf = array();
+  unset($base_url);
   require_once './'. conf_path() .'/settings.php';
 
   if (isset($base_url)) {