Caching of action links

  'action-links' => array(
      'title' => t('Action links'),
      'cache' => DRUPAL_CACHE_GLOBAL,
    ),

caching is set to global. not every page has action links. i discovered than when using action links block, logged out and went to /forum (add new topic was gone)(add new topic is added to action links).

changing to DRUPAL_CACHE_PER_PAGE, solves this.