I bought my 24" ACD for one purpose and one purpose only--watching movies from iTunes. In the past I always dragged iTunes over to the external monitor, started playing the movie, and clicked the button to go full screen and I never have had a problem. Until now (iTunes 9.0.1 issue I guess?). Now when I drag iTunes over and click to go full screen, it moves from my ACD to my MBP display, e.g. I cannot play fullscreen mode on my ACD--ONLY my MBP. Running a clean install of 10.6.1 and 9.0.1. What gives? This is annoying as hell.