So I read this post on Matt’s blog, and then went to the post about the issue on random foo. I discovered that my 12 inch powerbook was also running at 533 Mhz, and not the 867 Mhz that it was supposed to be at. I then followed the instructions on the site for correcting the problem. My laptop seems much snappier now. If you own an Apple powerbook and are running Mac OS X, I recommend that you check these posts out, you might be running at a slower speed than you are supposed to. Update: It seems like, after careful testing by several people, that this is just a broken piece in the reporting, not an actual issue with processor speed.