I have a machine that is running Windows XP Home Edition SP2. The computer is directly connected to a cable modem. The main problem is that this computer will stop working on the internet until the network connection is repaired. This can last a couple hours, or a couple minutes. Repairing the network connection always seems to fix the problem. I know that it is probably not the cable modem, because if i directly connect my laptop to it, it doesn't have the same issue.