You may find you need to change ports around (and use an SSL tunnel to the proxy server) depending on the time of day, day of the week, etc. BT seem to randomly throttle traffic on other ports - some days I can get uncapped speeds on a port/application during peak times other times I can't...
I use my own dedicated server as a proxy with an SSL tunnel via putty/ssh to get around the throttling... I don't mind traffic management at peak times - but I do mind traffic management to the point where webpages stall or take as long to load as on dialup and interrupt any video/music stream I might have playing, not to mention the inability to play/stream some movies/music in realtime during peak times - which should be perfectly able to stream even on a 0.5Mbit connection...
Edited by deleted (Tue 19-Jun-07 16:56:32)