I have a situation that is very unusual. I recently switched out my monitor from a Dell Monitor to a View Sonic. Before this switch out, Parrallels was working fine. I could swithc from Coherence View, Full Screen View and OS Window view fine. Now with that said, my problem is this. When switching from OS Window view to Full screen view and display my Parallels on another monitor, which in this case is my View Sonic, my mouse will not allow for me to go in between my XP window to my Mac window. I have the monitors overlaying my system preference (mac side), so when I move my mouse up and down into my XP window I can transition okay from Mac to Window. Now this doesn't happen any more. I can't think of a reason to why this is happening. I'll save you some trouble though. I have already switched back to my old monitor and the problem still persist. Please if someone can help, i would appreciate this a lot.