? sites/all/modules/contrib
? sites/default/files
? sites/default/settings.php
Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.1247
diff -u -p -r1.1247 common.inc
--- includes/common.inc	28 Oct 2010 02:00:27 -0000	1.1247
+++ includes/common.inc	4 Nov 2010 08:37:44 -0000
@@ -2210,9 +2210,7 @@ function drupal_http_header_attributes(a
  */
 function drupal_attributes(array $attributes = array()) {
   foreach ($attributes as $attribute => &$data) {
-    if (is_array($data)) {
-      $data = implode(' ', $data);
-    }
+    $data = implode(' ', (array)$data);
     $data = $attribute . '="' . check_plain($data) . '"';
   }
   return $attributes ? ' ' . implode(' ', $attributes) : '';