? modules/user/.svn
? modules/user/translations
Index: modules/user/user.pages.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.pages.inc,v
retrieving revision 1.11.2.2
diff -u -p -r1.11.2.2 user.pages.inc
--- modules/user/user.pages.inc	16 Sep 2009 17:54:20 -0000	1.11.2.2
+++ modules/user/user.pages.inc	31 Mar 2010 22:47:51 -0000
@@ -148,6 +148,10 @@ function user_logout() {
 
   // Destroy the current session:
   session_destroy();
+  // Restore the custom session save handler which is destroyed by
+  // session_destroy() due to a PHP bug.
+  // @see http://bugs.php.net/bug.php?id=32330
+  session_set_save_handler('sess_open', 'sess_close', 'sess_read', 'sess_write', 'sess_destroy_sid', 'sess_gc');
   // Only variables can be passed by reference workaround.
   $null = NULL;
   user_module_invoke('logout', $null, $user);