I had a go at BitTorrent the other week (pyuuurley out of curiosity, I don't agree with ripping stuff off
) and had similar probs. I have a sneaking suspicion that it could have something to do with your firewall settings. BitTorrent only seems to work if it can upload at the same time as it downloads, and likes to keep uploading for several hours after you've finished taking whatever file you were after.
I wouldn't take my word for it tho', I wasn't bothered enough to try to sort it out!
Anyone else?