Comment 1 for bug 907709

I've now experienced the same problem with Gnome shell, although there it's slightly different as even moving windows doesn't cause the screen to refresh, I have to open the activities view and close it again to see that a window has updated or even moved. It did work fine for a long time before that problem though. So it appears that this bug is probably with the Nvidia drivers. However, I didn't have any graphical issues with Kubuntu 11.10 on the same machine with the same driver.

I've tried upgrading to the Nvidia 280.13-0ubuntu6 drivers from the ubuntu-x-swat ppa but without any improvement.