Hello, I have only had a Mac now since November, and I am not sure if this is a problem because I don't know Mac's well or if this is a problem to add to the extensive list on my MBP. The problem is the sound stops working. Not the sound for like if I was watching a movie or something. No more the Sound effects like the Trashcan emptying or a that ting when copying a file into the application folder. So what gives? This has been happening a lot lately and I can't figure out what is going on... Does this happen to anyone else? The only way I've found for a solution is to restart. Which is a pretty big annoyance since just last night I restarted because the same problem was occurring.