A few times a week, it just stops playing sound. I'll click play on iTunes or RealPlayer, and the play button will turn to pause like normal, but then the music just won't progress. The time stays at zero, and no sound comes out. When I play videos, the picture plays but no sound. Also, I have AOL and I notice a distinct lack of anyone yelling at me "Welcome! You have mail!" But then I'll restart my computer, and the sound will work fine again.
It's getting really annoying, because it usually happens right when I'm in the middle of something and I need to hear something. Does anyone know what's wrong or what I can do to fix it?