Well, I got my macbook three weeks and I thought it was great, but then I got really scared when I heard about the RSS (Random Shutdown Syndrome) about 2 weeks ago. So, It freaked me out when mine restarted while sleeping (only happened once). So, I called up AppleCare and they said it was a glitch with the PMU. Basicly, the PMU thought that the MB was getting too hot, so it decided to restart itself. So, I resetted the PMU and I have not had the problem for about a week. Well, maybe I just have a newer macbook... When did you buy yours?