ok not really...but... It makes a funny noise every 20 minutes or so. My G5 did it and I made a thread about it a long time ago. http://forums.macrumors.com/showthread.php?t=98766 Now my MacPro is doing the same thing. What the hell is it? I got pissed and sat quiet with my MD recorder for a half hour and got it. http://www.jesterpictures.com/audio/macnoise.mp3 Anyone else hear this on their machine?