Currently 350.000 peers have problems connecting. The same thing happended to several popular trackers about a year ago. Mongo offers the following solution to fix the problem…
If you’ve downloaded a torrent with the announce http://mongo56.org:3434/announce, simply open the torrent up with Maketorrent – second tab "View/Edit Torrent" and change the tracker announce to http://mongo56.org:3535/announce, click save – and the torrent will work anyways. This is also doable in clients that support editing of torrents. You can also use the command line; For linux; btreannounce.py http://mongo56.org:3535/announce /path/to/.torrent For windows: python btreannounce.py http://mongo56.org:3535/announce c:\path\to.torrent
Let’s hope things ge back to normal asap.