Topic says it all. Happen to anyone else? I can be listening to a CD through the internal speakers and its nice and loud and sounding swell. Stop playing for awhile, try to play again, or maybe plug in some headphones, and no sound at all...i don't get why it's doing this...its OBVIOUSLY 10.2.5 because it wasn't doing it before the update. I've tried plugging and unplugging headphones. The only thing that solves it is putting the machine to sleep, and waking it up. Odd.