Deluge BitTorrent client 1.3.15 was released a day ago with various fixes. Web UI users are highly recommended to upgrade to this release due to a security fix.

Deluge 1.3.15 changelog:

• Fix issues with displaying libtorrent single proxy.
• Fix libtorrent 1.2 trackers crashing Deluge UIs.
• Fix error in torrent priorities causing file priority mismatch in UIs.
• Gtk UI:
  • Configure gtkrc to use consistent button ordering on Windows.
  • Fix column sort state not saved in Thinclient mode.
  • Fix connection manager error with malformed ip.
  • Rename SystemTray/Indicator? ‘Pause/Resume? All’ to ‘Pause/Resume? Session’.
  • Workaround lt single proxy by greying out unused proxy types.
• Security fix for Web UI: Check render template files exist otherwise raise 404.
• Some plugin fixes. See the release note.

How to Install Deluge 1.3.15 in Ubuntu:

Deluge has an official PPA contains the latest packages for Ubuntu 14.04, Ubuntu 16.04, Ubuntu 16.10, Ubuntu 17.04, and their derivatives.

1. Open terminal via Ctrl+Alt+T or by searching for “Terminal” from start menu. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:deluge-team/ppa

Type in your password when prompts and hit Enter.

2. If you have a previous release installed, upgrade Deluge using Software Updater after checking for updates:

Or run commands to check updates and install Deluge:

sudo apt-get update && sudo apt-get install deluge

In the command, you may replace deluge with deluge-web for web UI, or deluge-console for console UI, deluged for daemon.

How to Restore:

To restore to the stock version of Deluge BitTorrent client in your main Ubuntu repository, purge the PPA via command:

sudo apt-get install ppa-purge && sudo ppa-purge ppa:deluge-team/ppa