Whoops, forgot to answer this. The test site now offline as we change how it operates.
As it turns out bittorrent clients are not always obeying the "recommendation" in the protocol on who frequently to connect - thus can overwhelm the site with constant checkins. Every tracker checks every file at regular intervals we advise 1 hour checks but they seem to do it much more frequently and it really adds up. It seems that when a file goes offline the trackers check very frequently to see if it has been restored.
I am now thinking of deploying a C based torrent tracker that is parsed by Biostar rather then Biostar being the main tracker.