Hi...so I've decided to get a Rev. A dual 1.8 g5 (I know, I know I swore I wouldn't buy one, but the price is just too good). However, my question is this...how prevalant are the audio problems? Is it an isolated batch of problem plagued computers, or is it something that most users won't notice but every g5 has the problem? As a pro-audio user, I'm a little scared to buy one to be honest. Feels like Russian roulette. Thanks!