I ran into 2 problems with Qwest DSL that may or may not be related. The first problem was the result of a faulty water-meter reader. Everytime the water company would dial up the meter, it would kill our phone service. The other problem resulted from a second phone line coming into the house. Billing had been stopped for it but it was never disconnected at the switch, so DSL service contantly dropped. Not quite your problem but 2 more things to check out :)