protected function _start()
    {
        //  start session if not startet
        if ($this->_state == 'restart') {
            session_id($this->_createId());
        } else {
            $session_name = session_name();
            if (!JRequest::getVar($session_name, false, 'COOKIE')) {
                if (JRequest::getVar($session_name)) {
                    session_id(JRequest::getVar($session_name));
                    setcookie($session_name, '', time() - 3600);
                }
            }
        }

        session_cache_limiter('none');
        session_start();

        // Send modified header for IE 6.0 Security Policy
        // Joomla! 1.6: Moved to configurable plugin due to security concerns
        //header('P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"');

        return true;
    }