updated core to 7.37

modules/system/system.module

@@ -2030,7 +2030,6 @@ function system_user_timezone(&$form, &$form_state) {
     '#description' => t('Select the desired local time and time zone. Dates and times throughout this site will be displayed using this time zone.'),
   );
   if (!isset($account->timezone) && $account->uid == $user->uid && empty($form_state['input']['timezone'])) {
-    $form['timezone']['#description'] = t('Your time zone setting will be automatically detected if possible. Confirm the selection and click save.');
     $form['timezone']['timezone']['#attributes'] = array('class' => array('timezone-detect'));
     drupal_add_js('misc/timezone.js');
   }