Well, I need some advice. My iMac (edit: 15" flat panel) is emitting a high-pitched hum (similar to an old CRT TV) and it is driving me nuts (and giving me headaches...literally). I have Applecare, and called them just now. I described the problem, down to analogies such as "it sounds like an airplane pulling into a hangar" and "an electrical-sounding hum, possibly from the HDD or power supply." In classic Applecare fashion, they had no documented evidence of this being an issue...yeah, right. I told the guy that I've read tons of message boards saying it is a problem, but Apple won't admit to it. I was ultimately (the 1st time) told to take it to the nearest Apple service center (90 miles form me, mind you). I refused to drive that far (hello? Applecare?) and they transferred me to someone else (direct dispatch) to see if someone would come to me. Well, the lady I was transferred to transferred me to tech support (back to Applecare we go). The new guy I spoke with seemed aware of the problem, as he immediately suggested my HDD bearings were bad. I felt confident until he gave me the "lets isolate the problem by doing a system restore, then go from there." OK, I know it isn't a software issue, as the noise happens immediately when I turn on my iMac, before any software loads. I said I would do it and call back. I'm just call back and say I did and it didn't solve the problem. The reason I don't want to do it is because I already did two weeks ago (when I received the iMac, I did a clean install). I'm not into duplicating efforts for no reason. He said if the reinstall didn't help, they would "build the case" and go from there. I then asked him if I would have to drive 90 miles, drop it off, return, and go pick it back up without a guarantee it would be repaired (they have to find something "wrong" before they will fix it). I requested he send someone to my house, and he said that was doubtful becuase I am further than 50 miles from a service center. Gee, don't worry about it Apple, I'll burn vacation, gas, and my time to fix your faulty product. As you can see, I'm ticked. Are there any other options? Does anyone else have this ear-piercing noise? I switched from PC's because of the fan noise (the only reason) and now I can't even sleep with this thing on. Makes me miss the woosh of the fans.