//520nav_poll_all
// poll all folders for new mail?
$_prefs['nav_poll_all'] = array(
    'value' => false,
    'locked' => isset($_SESSION['imp']) && $_SESSION['imp']['base_protocol'] == 'pop3',
    'shared' => false,
    'type' => 'checkbox',
    'desc' => _("Poll all folders for new mail?"));

