I built a PC this past Tuesday, and picked out the HD6850 card. While on the desktop, I get strange artifacts on the screen that will randomly appear in portions of the screen, flash and disappear. You can't capture them in a screenshot. I've yet to see it appear in games, but then again, I've not had a chance to install but one game to try it in. I've had the latest Catalyst drivers, as well as older version, and out of the drivers I've tried I still get the strange black/blue squares, lines, or dots on the screen. I can't really tell if its a driver issue, or a defective card that needs an RMA, or something else for that matter.