If you're still running Plex Media Server version 0.9.17.0, it's recommended that you upgrade to the latest version to take advantage of new features, security updates, and performance improvements. Upgrading is relatively straightforward and can be done through the Plex web interface.
To place version 0.9.17.0 in context, here is a brief look at key moments in Plex Media Server's history: plex media server version 0.9.17.0