I had similar blacking out occuring on version A01 of this monitor. I don't have the monitor anymore, but the problem might have been (more) evident when using a NON dual-link DVI port. My video card was a Geforce 6800 Ultra OC, with only one dual-link port. I used a free application called PowerStrip to reduce my monitor's refresh rate, and the blackouts would stop for a while. Blacking out also increased when certain windows were maximized on screen, especially Adobe Reader. These issues suggest possible bandwith bottlenecks in the video card or incompatible DVI implementations in either the video card or monitor.