No problems here. Upload and download speeds within what BT expect for this line using their speedchecker, same results using BB Genie. I,m approx 4K from the exchange,using a BT hub and running Vista Premium. It takes on average 1.3 seconds per page change. Weather here has been wet for weeks(North Wales at 300mtr elevation), no protection from prevailing wind/rain for our pole mounted connection and the connection cabinets from here down are all road fitted chambers with rainwater rivers flowing over and around them!! Last time we had a problem it was sorted within 18 hrs and was caused by the one Grey Squirrel left in the area chewing the cables to the post mounted box!!
BT have served us well over the last 33 years of our use of them.