Index: includes/path.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/path.inc,v
retrieving revision 1.24
diff -u -p -r1.24 path.inc
--- includes/path.inc	24 Jun 2008 22:12:15 -0000	1.24
+++ includes/path.inc	25 Sep 2008 02:11:49 -0000
@@ -216,9 +216,13 @@ function drupal_set_title($title = NULL)
  *   Boolean value: TRUE if the current page is the front page; FALSE if otherwise.
  */
 function drupal_is_front_page() {
-  // As drupal_init_path updates $_GET['q'] with the 'site_frontpage' path,
-  // we can check it against the 'site_frontpage' variable.
-  return $_GET['q'] == drupal_get_normal_path(variable_get('site_frontpage', 'node'));
+  static $is_front;
+  if (!isset($is_front)) {
+    // As drupal_init_path updates $_GET['q'] with the 'site_frontpage' path,
+    // we can check it against the 'site_frontpage' variable.
+    $is_front = ($_GET['q'] == drupal_get_normal_path(variable_get('site_frontpage', 'node')));
+  }
+  return $is_front;
 }
 
 /**