I got a new dual 2.0 g5 and its working great. The only trouble i have currently is that there doesn't seem to be any way to get a microphone to work with the machine. I checked everywhere if the line in is maybe muted but nothing seems to be wrong. I tryed several different mics on the g5 and none worked at all. When i'm in preferences -> Sound -> Input i cannot get the bars to fill up even if i shrike in the mic. Am i missing something obvious or is my line in broken ?