MacBook Overheating on Shutdown with Leopard
I shut down my MacBook Pro yesterday and several hours later returned to find it over heating in my carrying case in my backpack. It had seemed to shut down when I put it away - but then it kept running down the fan and battery for several hours.
It happened very much like this user's post:
Unknown to me was the fact that the MacBook had not actually shut down. I boarded the flight to Paris, all the time thinking that my "electronic device" had properly powered down for takeoff as required by international flight rules. Then in Paris, while going through security, I noticed that my case was quite warm. Pulling out the MacBook to pass through the x-ray scanner, the laptop was hotter than blazes (overheating from being in the closed carrying case). It was so hot, I could hardly hold it. When I powered it up, I noticed that the battery had gone from 99% to 5%. The MacBook had been running the entire time of the flight to Paris - even after doing a shutdown and closing the lid.
There are a whole bunch of similar posts on the Apple forums regarding Leopard shutdowns and overheating.
AppleCare is probably a good idea so you don't get burned. Fire coverage is probably a good idea as well.