I too, have had an unexplained slow-down of my connection with vista. After trying things, and after visiting Orange problems, ( found whilst trying to sort the fault ), i was convinced that it was Or ...
I am in Warrington Cheshire I am getting 138kbps, on a supposedly 8mb line although 2 is the max at the minute, I was told 6 days ago there was a fault still not fixed tod ...