Hey guys, been on the forum for awhile checking out all the different problems the MB Air Rev. B might have. Well I am on my 4th MB Air Rev.B already. I seem to have a problem with it and I was wondering if I should bring it back in, I am getting tired of going back to the Apple store and I think they are also with me, hahaha. Well my problem is this: - When I clean the screen with the included cloth or any cleaning cloth, the screen makes a clicking noise. As if it's like not flushed against the bezel. This only happens on the left part of the screen from, top to bottom. If I wipe in the center, no problem at all. I was wondering if anyone of you is experiencing the same problem? Btw, I also have the lines, but its very faint and I don't notice it as much as the my 3rd replacement Air, which I exchanged for this one. The Apple Store said that if I had any more line problems with this one, they won't replace it anymore and they would just try and replace the screen. I don't know if my problem is a common one and worth it to send my computer out to get its screen replaced, and who knows, maybe the replacement screen might have the lines and that's why I'm worried about getting the screen replaced, in addition to being out of my laptop for a couple of days.