Comment 22 for bug 347711

I had been having this problem too w/ an Asus M3A78-EMH (780G) motherboard ever since the switch from Intrepid to Janunty. I switched to 2.6.31-999-generic #200908211846 from the mainline kernel repository (https://wiki.ubuntu.com/KernelTeam/MainlineBuilds) a couple of days ago and haven't had any more problems. I've transferred at least 100gig of data so far...So if you're having this issue, make the switch, although I had to patch fglrx to get it to build correctly. https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/394985