lol, well, considering, my compy has an Intel 700mhz pent III E, i don't think it's over heating too bad.
also, it only happens when i do several things at once, and the wierd thing is, everytime i send a message of any kind, IM, Xfire...whatever, it beeps. never fails to beep. it's super loud too, not this little thing you can look over.