I've read the several threads in various forums that state that video resolution should change when switching to full-screen to the native resolution of the monitor (in my case an Apple Cinema Display 30") provided that the "Allow Change to Guest Screen Resolution" button is checked in Parallels Preferences. However, I cannot get mine to do it. I have checked, unchecked, started, restarted, etc etc, reinstalled Parallels Tools, nothing seems to fix the bug. In my case I have the Windowed resolution set to 1600x1200 and want Parallels to automatically switch to the full resolution of 2560x1600 when I switch to full-screen. It just doesn't do it. Anyone else having the issue? Anyone solve it?