I just got a Macbook Air 13 and I've noticed if I push down on the palm rest surrounding the track pad I hear a click that is similar to the click of pushing down on the trackpad it self. It sounds like the frame is rubbing against the trackpad and catching (or it could be the keyboard) and the clicks as it pops down or back up; the whole palm rest also has a little give. I have 2 units currently as I wasn't able to price match the one I bought last week and it was on sale this week from Best Buy so I need to return the one I bought last week But that one doesn't have the click/creak noise unless I really push hard down on the palm rest. Is this a common issue? I checked around and only found 1 post on the Apple forms about it... Also, to bring back an old issue. The one with the "click" is a Samsung screen and the one that doesn't "click" as easily is LG. I think the general consensus says the Samsung is the better looking monitor without calibration so I want to keep the clicking one but I'm worried it might be defective. Any advice?