I've just upgraded a few systems to the latest ATi Catalyst suite version 8.1 and I'm noticing a strange bug.
Here's the deal - I updated the driver and rebooted. Next I noticed a small white square a few pixels across in the upper left hand corner of the screen which looks like a serious case of stuck pixels but it's not that because I switch monitors and it's still there. I rebooted and saw it was gone - or at least it was gone until the Catalyst icon appeared in the system tray and then it was back.
Downgrading the driver seems to make it go away so I'm certain that it's a driver issue.
Anyone else noticed this?