Originally Posted by beeerlover

Im mod/admin on a simular torrent site. There after some trial, error, head scratching, & admin chats we figured it out (partially.)

This happens when the peer is using a client the tracker doesnt get along with. Most often, its the non-windows OS offering the challenge to be tracked correctly; sometimes it is windows, but just an off-brand client. The results vary, but many times they show every torrent the member has ever downloaded or uploaded as being active in their cleint when they are not. & sometimes I even see (when these people seed a new torrent) that the thread can register everyone who views it as having downloaded it -- when they did not.

Have no idea of how to fix, other than to recommend users stick to the 'top2' [Azureus & µTorrent]