I was in a full screen mode XP session and suddenly lost the ability to click on anything or scroll with the mouse. I could move the mouse, but clicking and scrolling did not work (on trackpad either). I finally switched back to OSX to find that the Parallels preferences dialog window was up and waiting for input. I must have somehow typed "command-," without realizing it. Not that major, but very confusing! I would think if Parallels wants to show me a dialog, it should probably come up in full screen mode too, right? Thanks for the great product -- I've been full time in XP (for work stuff) on my MPB for several weeks now without any major hitches.