First I noticed a few weeks ago that Mail stopped doing the "woosh" noise when I sent out messages. That didn't bother me, I could deal with it. Also, there was no 'new message' sound, either. But now, in the past week, iChat has stopped making noise altogether. Log in, log out, send message, receive message, no sounds. Yes, I've quit and reopened, and restarted, nothing works. Help please?