Index: includes/bootstrap.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/bootstrap.inc,v
retrieving revision 1.303
diff -u -p -r1.303 bootstrap.inc
--- includes/bootstrap.inc	5 Sep 2009 13:05:30 -0000	1.303
+++ includes/bootstrap.inc	9 Sep 2009 10:46:01 -0000
@@ -616,7 +616,9 @@ function drupal_settings_initialize() {
  *   The filename of the requested item.
  */
 function drupal_get_filename($type, $name, $filename = NULL) {
-  $files = &drupal_static(__FUNCTION__, array());
+  // The location of files will not change during the request, so do not use
+  // drupal_static().
+  static $files = array();
 
   if (!isset($files[$type])) {
     $files[$type] = array();