So I really fear that one day my backpack is going to start burning or melting, or at least that my Macbook Pro will die from over-heating because it fails to stay asleep when I store it away. I've experienced the same thing 3 times now where I set it to sleep (I make sure the fans come off after I either close the lid or manually select it to sleep), put it in my backpack, and open the pack 30 minutes later at home to find the laptops fans running like crazy, and the whole bottom surface is so hot (having been nicely insulated by the padding of the backpack) that I have to touch it with an oven glove to take it out. The fans then keep running at highest RPM (sounds like about 6000) for about 5-10 minutes, with the screen black. They then throttle down to keep running at rather high RPM (maybe 2000-3000) until I eventually have to force reboot, since the screen stays black and the keys/mousepad are not working even after 20 or so minutes. My questions are: 1) why does this laptop not have a mechanism to go to auto sleep above a certain temperature, e.g. before it starts to burn material? 2) How do extreme heats affect the computers internals, i.e. should I anticipate that certain components won't last as long now that this has happened three times? 3) Do other users have the same problem and is Apple aware of it? Thanks for any helpful ideas you may have.