There's really only one thing that's bugging me a lot with this computer. If I'm listening thru headphones, whenever it starts to play a sound, if I play a QT movie, play the system sounds in system prefs, whatever, there is a little glitch sound that happens. It's as if the sound card is cutting on to play the sound and the "turn on" is audible. Kind of annoying because it happens every time. Is anyone else experiencing this? Is this an issue with the drivers? I might use this computer in live performances where it wouldn't be too cool to have that glitch sound happening a lot. It's late, but tomorrow I will hook up my USB audio interface and see if that is affected. I'll also try to record the "glitch" so you can hear what I'm talking about. Stay tuned.