I've noticed that whenever I go far back in time with Time Machine, it totally stops working. The animation keeps going and the mouse still moves. There's no spinning colour ball or anything of the sort. There's no HD activity on the backup drive. I know the drive isn't being accessed at all because after a short time it spins down. I can't click anything, and the time dock on the right doesn't magnify anymore. I wait for a few minutes, nothing. The only thing I can do is force quit Time Machine. After that happens, the desktop does not reappear, and neither does Finder. Only the desktop image is visible. However, every other open application appears, but I can't actually go and use them. Spaces still works, but Expose does not. After that, the only thing I can do is force restart by holding down Command + Control + Power Key. It's happened every time I go far back in time (the furthest point being November the 6th 2007). It happens when I do a huge jump from present to past, or even small jumps that eventually lead me to far back. I can't find a crash log for Time Machine, but maybe I overlooked it. Where would the logs for Time Machine be kept? Maybe it's under a different name besides Time Machine. I also can't find a reference to an error regarding Time Machine by searching under All Logs in Console. I'm on a MacBook Pro 2.33GHz using all the latest updates. The computer is just over one year old, and the external drive is about 2 years old. The drive itself seems totally fine. Any ideas?