I recently installed Parallels on my Macbook, and whenever it's running one core's system usage goes up to 100%, which kicks the Macbook's fan on full blast in less than 2 minutes. I can understand there being a heavier load while running, say, Windows 2000 or XP, but this is happening with DOS 6/Windows 3.1 running in the VM. I can't see how running software designed to comfortably run on a 386 could be taxing a Core Duo. This is more than a little annoying, seeing as it makes it impossible to play a quick game of Rodent's Revenge or Centipede in class without getting several inquisitive/annoyed stares. Have I made some gross oversight somewhere, or are there some settings I overlooked somewhere, or....? Thanks for any help.