I apologize if this has been discussed before. I did a search, but it did not yield anything of relevance. Up until about 2 weeks ago, my Macbook has worked flawlessly, but recently, it has been just turning off several times a day. I am assuming that this is due to overheating, as the computer is quite hot. Has anyone else had issues with this, or can help me identify what the problem is? I still covered under applecare, so I may just end up taking it in. I don't know if I could recreate an involuntary shut down though. Any help or links to relevant discussion would be much appreciated.