The power supply is making funny noises. High-pitched buzzing/whining, fairly consistently, but breaks up every once in awhile. It's ridiculously hot, I can't pick it up. It smells funny - not burning, but definitely hot. The noise stops when I unplug it from my laptop. Is it going to die? Btw, if it matters - MB = 1.83 Coreduo, extra RAM, bigger HDD, yadda yadda. School-issue, they extended applecare to 3 years for free because of all the probs. Is the power supply covered under applecare?