My sleep cycle is erratic. I change it about 4 times a week. Sometimes, I get barely 4 hours of sleep, sometimes I sleep like a troll. When the next day is a holiday, I tend to stay awake, and in most cases up to 6-7 AM, sleep, and wake up at around 7 or 8 in the night. I feel disgusting when that happens, but it does. My longest sleep session record is 18 hours, in the holidays.
My laptop was fine when it had Vista and all the drivers installed. but when I installed XP, it started turning off by itself due to overheating. I downloaded and installed some processor drivers from AMD's site and it's helping a lot. My 1.7 GHz Dual Core processor now stays at 800MHz and only raises when needed. I haven't yet experienced any problems. When running intensive processes though, the temperature goes to about 90°C.
@Blizz: I considered getting RM Clock, but since the new drivers fixed the problem, I didn't bother. But I have it running now because I couldn't find a better battery indicator. The default XP one sucks.