My BT Broadband connection didn't work the other day either. Took about 4 hours for it to connect. The router connected to DSL because the DSL light was solid, but it just wouldn't give an internet connection. When I went on the router configuration page, it had the Connect button and when you pressed it it would say "Connecting..." then after a few seconds go back to that previous page with the Connect button and wouldn't connect at all. I don't know if this is what happens to yours, but I fixed it by randomly pressing things - the one that made it work was going to the router config page and going on Advanced, DSL, then changing the line mode to T1.413 and saving. When this made the situation worse by making it not get passed the "Handshaking" stage, I changed it back to Auto and it connected. This winning combination of buttons took me 4 hours of fiddling. Mine hasn't gone off again since though so I haven't had chance to see if this method fixes it all of the time.