I don't know if anyone else is experiencing this or not. It seems like since I upgraded to ML some of my sounds get "stored" up until I plug in my headphones into my computer (2008 Al Macbook). It seems to by Mail.app sounds that are getting stored. When I plug in my earphones to my computer I get hit with several new email and sending email sounds when I know for a fact that they shouldn't be there. I have Mail open full screen in a second desktop if that makes a difference. Just curious if anyone else is noticing this.