I seem to have this odd problem with my Apple Studio Display, and my new mac mini. I have an old 20" Apple studio display and it is not working at is Native resolution of 1680x1050, I get pixelation brake up of the monitor. But if I use a different resolution say 1600x1000 the monitor works fine. The monitor is hooked up with the Apple ADC to DVI block, then I use the DVI to HMDI connector which comes with the mac mini. I have tried the 20" monitor with my old G4 mac mini and the Apple Studio display work fine at it native resolution, so it's not the monitor, I have also tried an old 17" Apple studio display with the new mac mini and that work fine as well. It's just seem the be the resolution at 1680x1050 which is coursing the problem. Anyone here got any ideas?