I don't download movies/music/pics etc. Usually just browsing so I couldn't possibly be considered a heavy user. I was told i'd only get 0.5mb but this was purely because i'm quite a distance from the exchange. Just done another test and i'm getting 5.35mb again.
I've found a load of people on the internet now having similar problems with BT. Not too bad at the minute.
Oh well. Might try those wireless broadband dongles for my laptop.