I've had my comp for about 6 months or so and ever since I've had it, the modem (U.S. Robotics 56k) wouldn't work how it's supposed to. I tried everything to fix it: software, changing the settings, looking at tech support web sites, calling the tech support number, getting new drivers, and nothing worked. So what was it you ask? A phone that was plugged into one of the phone lines. It wasn't even the same line. It was plugged into the home phone line while my comp was in another line. I unplugged it and so far no problems. No more disconnecting after a few minutes and no more slow connections. It's twice as fast also. So if your having problems I'd suggest to try to unplug every phone in the house and see if that works.