I've been getting the 4A BSOD when I use my Plextor PX 810-SA SATA DVD drive to read DVD's/CD's. It's not repeatable, but if I use the drive enough times, it will pop. The mobo is ASUS P5K WS. I also have a 3 drive RAID 5 array and a 4th non-RAID drive. I have the latest Intel Matrix Storage drivers as far I know. I've just built a new system to which I'll migrate when Windows 7 comes out. I don't have a DVD drive for it as I was planning on using the one out of the current system. Anyone getting BSOD's similar to this?