Windows XP running inside Parallels.... I leave it alone for 30 min or so and each time Parallels just freezes.
The only way to thaw is to force quit and restart Parallels.
Then it happens again....and again....
Same. Parallels froze while I entered full screen mode, (just got a blank screen after the rotation and no mouse control) I couldn't get control back (ctl alt didn't work, and many other combos) and had to do a hard shutdown on my MacBook Pro Dual core, 2GB, Parallels Beta 6.