I've had my 14" for about a month now and just as I was going to put it into my Booq sleeve I heard a rattle. If I hold the iBook by both sides and tilt it back and forth I can hear a small piece rattling back and forth. My guess is that it's a screw that some machine or assembly-line crack-head didn't tighten enough. Giving that this damn thing has a hundred or so screws I'm debating whether to call AppleCare. The nearest store is an hour and a half away. I bought this thing to do on-the-fly work at campus, and right now is a really bad time to send it in just for someone to crowbar my new iBook open, just to tighten a screw back in. I haven't taken it apart myself, so I know it's a QC issue. Everything is working properly for the moment, so most likely I could let that screw roll forever.