/**
  * Get member setting data
  * 
  * @return array
  */
 public static function _getConfig()
 {
     if (empty(self::$_config)) {
         $configData = Fox::getModel('core/preference')->getPreferenceData('member_configuration');
         if (isset($configData['member_configuration'])) {
             self::$_config = $configData['member_configuration'];
         }
     }
     if (!isset(self::$_config['account'])) {
         throw new Exception('Account settings was not found.');
     }
     return self::$_config;
 }