I had already contacted them. Basically this morning after contacting them twice I had no internet connection on any of my computers apart from Linux on my dual boot machine. Both windows laptops and my Slackware Laptop failed to connect.
After speaking to them, all of the computers can connect to the internet (there was obviously something wrong either with the service or the cable modem) except for the Windows part of the dual boot machine. The ISP say that it must be an issue with that machine's networking card and seem to ignore the fact that it works fine under Linux. As I had a spare NIC I swapped them over but the problem still persists.
Is it possible that if the Motherboard was on its way out (its 4 or 5 years old) I could have a situation where under Windows XP the machine fails to refresh its network address when it tries to get one dynamically from the router using DHCP, but under Slack 10.1 it works fine?
I can't even ping the router from Windows (although if I set a static IP address I can ping, and I can reach google as http//18.104.22.168, but not as http://www.google.com
How can I find out if the hardware is or isn't functioning optimally? Or whether its a crappy Windows thing?