G5 noises

Some G5 are making weird noises, and sometimes abnormal ones. You are quite a few who are wondering if your machine is making normal or noises or not. So here are a couple of abnormal ones, recorded and put online to help finding out.
A G5 that beeps and whistles : http://xoomer.virgilio.it....PSU.Buzz.aif.L.m4a
Another G5 making weird and abnormal noises :
http://www.asamnet.de/~altendom/extmix/g5noise.html
And, as a bonus, I recorded the noise of the fan on my Radeon 9600 Pro.
The take was made with the machine enclosure kept half open and the iSight mike located about 80cm away, at the opposite of the opening. At the beginning you hear the fan of the card, then I stop it for a few seconds before letting it spin again. It can help you figure out its sound (sound is encoded in AAC).
ventilo9800.mov
Having managed to get in touch with Verax, I am eager to test the G03 that has been said to be very silent.