not a good week for my macs, is it? this has been bothering me for days. the hard drive in my albook (15" 1ghz) has been getting increasingly louder to the point that i can hear it making the clicks and buzzes of normal operation (or so i think it is) all the time. just now i heard a loud whine from it that i've never heard before. is now the time to back up to a new drive and swap them out?