Mine kind of does that, just not nearly as loud. It's actually gotten a lot quieter since I got it in June. Almost unnoticeable at this point but yours is pretty bad. Is the clicking the casing itself or the trackpad? My casing creaks, but doesn't click like that. It also flexes quite a bit when pushed around the trackpad, but all Airs do that due to the thinness and rubber feet. My MBP doesn't of course.