My biggest peeve is the hanging after a drive has been unceremoniously disconnected. I'm often manipulating image files for my wife to email or post on her, ugh, MySpace page and forget to unmount her drive when I'm done. Then, when she closes her iBook, I'm left staring at a beachball for up to fifteen minutes.

Another peeve of mine is that there's no way for a sleeping laptop to wake itself to run the maintenance scripts. Yes, I'm aware that there are ways to run them manually, but for someone like my mom, who just bought a new MacBook, they're just too complicated. It should be simple to check a box that says "Wake this computer to run maintenance tasks."

All of the desktop Macs I use that aren't meant to be running 24/7 are scheduled to wake at 2:59 and sleep at 5:30 so that these tasks are run, but there's no way for laptops to do it other than to leave them open but sleeping every night.