Hi,
I've been getting the same errors such as yours, but only with an extra accelerator plugged into the machine.
As I dont want to let go fo my nice Cyberstorm, I've come to the conclusion that these errors are either a RAM or a power supply fault.
Either way, I havent been able to track the problem down, and has caused many headaches.
Try fiddling around with the above, and let us know if you can come up with a solution.
What you could do is put a Setpatch NOCACHE on you ss. It will slow things down, but you might find it stops the gurus.