hi! I started my beloved ibookg4 1.2 ghz 5 minutes ago and when ever i move it the harddrive makes some strange noises. it sounds like the disks insinde the harddrivecase are moving.. at the moment everything still works fine. but this sound doesn't sound too good, especially since it wasn't there before.. anything i can or should do? i'm kinda disappointed right now..my ibook is only 1 and a half months old.. any ideas?