OK, two things here... first, my machine STILL has the incessant chirping/humming that is plaguing so many G5's. It seemed to go away for a while, but today it is definetly back, and more irritating than usual. It's been this way through two motherboards. The machine has been released for 8 months, why can't Apple figure out what the problem is?
Second- after installing 10.3.4 update, my rear audio port DOES NOT work anymore! I can only use the front one now. Anyone else have this problem?