Lost connection

Last wed my mum was using the internet, when it suddenly lost the connection. After several hours she phoned Orange(her ISP) and was told her line was being 'upgraded' and that it might be down for several days. Yesterday I went round to check the stats on her router (netgear 834g) and it shows the modem status is connected downstream at 7328kbps and upstream at 288kbps. Line att downstream was 30 something db with a noise margin of 10 db.
Clicking the connection status button on the router status page, the 'Testing internet connection' window that comes up shows:

Connection time 00:00:00
Connecting to server Disconnect
Negotiation LCP is allowed to come up.
Authentication ---
Getting IP address ---

No settings on her router have been changed since she lost her connection, and after managing to get through to Orange on the phone they say the connection is fine.

Any ideas would be much appreciated