For the second time ever, my computer made a siren sound and then promptly shut off. I'm pretty sure that's probably the temperature warning sound. It is a little warm in the house, and the air flow is kind of constricted with the cover on the computer. Not to mention the air I felt the case fan pulling in seemed warmer than the rest of the air around the computer.
Interesting. I've taken the cover off the case to improve air circulation and hopefully keep it from over heating again.
*goes back to Kingdom Hearts: Chain of Memories*
Update: Make that three times now. I'm just going to leave it off for a little while and go take a shower. (It's 77°F in here, or more)