I just picked up a new 24" aluminum iMac, it is absolutely beautiful. This is not the 1st 24" i have had, I had another in late August. I noticed a few differences that I was wondering about. First this one seems to have a fan running most of the time, it is a very quiet fan but it is audible. I seem to remember my other 24" making no noise at all. Second the DVD drive makes a lot more racket when being fed a disc. Third the OS boots to the desktop in about 10 seconds, it is lightning fast! Please keep in mind that I installed Leopard on this computer yesterday. If this fan noise is typical of the latest iMac hardware I'll stop obsessing over it. Has anyone else bought a 24" in the last few days that exhibits this behavior? I did a SMC reset and that seemed to help a bit but I can't really remember what the noise was like prior to the reset so it might not have done anything.