BT's best average speed was 480kbs. This went on for two years, I could blow a gasket soon, nothing I could say would change this, I was always polite and calm, but inside I was fuming, they would do test after test, send engineers and test more, and still they would not invest in better equipment or software. Verbally I had to force them to cap the feed, it was resetting so often I would only be getting 124kbs for days on end.
So in January 2009 I ended up on TalkTalk's doorstep because they don't use BT's software at the exchange to drive the ADSL. I have to say they are so far the best three months I have ever had with broadband, the ADSL speed went up by 50%, and no resets, I would love to have stayed with BT but two years is a long time to put up with a disappointing service wouldn't you say.