	private function _notlastmodifiedby( $option ) {
		$user = new \User;
		$this->addWhere( $this->DB->addQuotes( $user->newFromName( $option )->getActorId() ) . ' != (SELECT revactor_actor FROM ' . $this->tableNames['revision_actor_temp'] . ' WHERE ' . $this->tableNames['revision_actor_temp'] . '.revactor_page=page_id ORDER BY ' . $this->tableNames['revision_actor_temp'] . '.revactor_timestamp DESC LIMIT 1)' );
	}
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.