'componentid' bug still exists in CiviCRM 4.0.8

Causes numerous errors on event registration page:
Notice: Undefined property: stdClass::$componentid in /home/xxxx/public_html/libraries/joomla/application/menu.php on line 231

To fix change: /components/com_civicrm/civicrm.php
Line:
$item = $menu->getItems('componentid', $component->id, true);
To:
$item = $menu->getItems('component_id', $component->id, true);
However apparently this will break Civi version 3.x.x