blakamin:freitasm: There's no throttling your connection, they don't block ports, you get what are sold.
Hmm... I'm not 100% on that. I've been a cable customer 7 years now and noticed in the last 6 months that a torrent will start off all good (500+ kb/s) and drop to 3k/dial-up speeds in about 2 minutes. Restart the software and it's all good for 2 minutes, change random ports and it's all good for 2 minutes. I've tried utorrent, vuze, transmission etc... all on 3 different PCs and 2 different routers.
I don't have any hassles with XDCC tho :D
btw, 90% of these torrents have been linux distros... not saying all are, but most
edit: actually tried deluge about an hour ago and the same thing.
Are you cable or DSL? I have been on cable all this time, and never had this kind of problem. I consistently could get 1.5MB/s up to 2MB/s even on 10Mbps service.