Users, important audio problem. the last update 10.4.9 on the iMac. There is to be a problem after installed it. this has never happened to me. the reason is i seem to have found out my imac seems to louder than before, i can lower it with my own none apple speakers. i can't to find a solution to lower the audio sound on my imac speaker. plus i already lower to one 1 dot volume. Does anyone have this unexpected issue. i hate what apple has to done this last update, they better fix this by the weekend.