you're basically right! but the problem is that the beta sends event=completed instead of started, and event=started instead of completed i think this is causing the 404 error. i didn't try it at demonoid but it's most likely causing the corrupt torrent issue, unless there's something different on how v2 reports the info_hash, but in that case you'd get "torrent not registered with this tracker". if the bittorrent team fixed this event problem it'd be great, i need v2's utp and nat hole punching features. thanks in advance, thumbs up