we had maint with broadband and pipex but problem only lasted for 2 hours with no connection at all.
Problem with loss of connection was solved for us by BT. Where the cable is secured to the house it had perished with the wire movment. Check if the problem is worse when its windy or raining bad. BT replaced cable in 15min free of charge. No probs since, pipex connection great always there when i need to connect.