Audio stopped working and my Air has been able to go 180 degrees for a while. I had taken it to the Michigan Ave. store (Chicago) before and gotten turned down for the hinge issue. Audio issue is new. So I took it to a suburban store, driving out to the sticks, because I hear they are easier to convince than Flagship stores. The guy booted my Air off an external hard drive, confirmed there was still no sound on his diagnostic tool (it didn't even recognize the speaker's existence) and took it in. Proposed solution: Replace logic board, speaker, display. He also said I should have it back (shipped to my house for free) within a week or so. I'll keep MR updated.