this is driving me mad. basically any action that has a UI sound is delayed by a second if that action hasn't been performed in the last 30 seconds. i didn't realize it was the sound that was causing the delay until i saw this thread if you haven't experienced it you can see it in this video keep in mind that delay happens for everything with a UI sound - first deleted file, first ichat message, first screenshot, first volume adjust, etc.. then the rest perform fine until you wait 30 seconds. whatever you're trying to do doesn't happen until after the os finds and plays the sound file. does anyone else have this problem, and how did you fix it?