Has any one else experirnced lock ups with this combo? When I first ran into problems, I put each board in 1 by 1. (Keeping PCI VGA drivers throughout). When everything worked, I installed Detonator 2 and the PC crashed. So I thought it was the M/B and the GeForce. Now I've come to find out that it is probably the sound card. I has newest Aureal/Turtle Beach drivers, but wanted the rear speakers on my quadzilla so installed drivers that support them, then BANG - as soon as something tried to use the sound card, I locked up. Has anyone else seen this or have a solution that allows me to use 4 speakers?