protected function _checkResult($result) {
        $rvalue = true;
        foreach ($result as $socketName => $value) {
            if ($value !== true) {
                Mage::helper('turpentine/debug')->logWarn(
                    'Error in Varnish action result for server [%s]: %s',
                    $socketName, $value );
                $rvalue = false;
            }
        }
        return $rvalue;
    }