That's because the trackers haven't updated their "whitelist" Not really, the BitTorrent will try to get the 'rarer' (least available) pieces first, so your client is downloading and seeding these rare pieces to other peers, so until you have 20 or 30% you could be uploading at least as much as you are downloading. Maybe more, depending on what upload slots are free in the rest of the swarm. Putting these ast two points together, it is possibly your queue and bandwidth settings that are configured badly, which is allowing uTorrent to "run away" with your connection.