The hard drive instruct say it's "automatic continuous backup." Just wondered because I notice a computer light stays on. That's the tiny light under the screen. But I'm assuming it's just the monitor because the tower itself is off. By the way, Mac guy told me yesterday when I looking at the 24-inch iMac that I'd be just as well off buying the $1,700 model because the quad would be overkill. So to speak. Make sense? jim --- Manage your account options at //www.freelists.org/list/muglo