As per title: http://support.apple.com/kb/DL1672 Has anyone downloaded the new fix yet and has it addressed your wifi/volume/black line issues? I bought an Air the week before last and returned it the same day after having the wifi issue. Wasn't sure at the time if it was hardware or software related as the Apple store didn't seem to know and it appeared (from reading various forums) that only certain machines were affected. It now appears to be a confirmed software glitch. But I want to know for sure before I buy another machine . . .