Guys, I just unpacked my new iMac, and the first thing I noticed was how much noise the HD was making. I never noticed that on my parents' iMac, so that gets me very worried. It's not any weird or very loud noise, but it's permanent, any time there's an access to it. Is it normal that I can hear it anytime my HD is working :S Is there any utility software I can run to check everything is normal ? Or am I unlucky and will I have to send it back to Apple to check is anything is not normal ?