MacBook Air Missing sounds
Periodically, sounds for emptying trash and sending email go away. Probably all alert sounds go away but those are the two most noticeable. When I restart the computer they come back. I suspect that it might be related to Airplay usage but can't confirm it. Yes, Airplay is off when the sounds are missing as is mirroring.
What is the problem.
MacBook Air (13-inch, Mid 2012), OS X Mountain Lion (10.8.2)