$this->addWhere( 'rc_log_type IS NULL OR rc_log_type != ' . $db->addQuotes( 'newusers' ) );
$timestamp = $db->timestamp( wfTimestamp( TS_UNIX ) - $wgActiveUserDays*24*3600 );
$this->addWhere( 'rc_log_type IS NULL OR rc_log_type != ' . $db->addQuotes( 'newusers' ) );
$timestamp = $db->timestamp( wfTimestamp( TS_UNIX ) - $wgActiveUserDays*24*3600 );