I've also updated my video drivers with no luck. (ATI x1600 Radeon).

I suggest that everyone who has a problem contact Sony and lodge a
complaint. Maybe if they get enough complaints they'll seriously address
this issue.

"Phil" wrote:
[color=blue]
> You are not alone. I have been seeing the same symptom. The system will
> simply lock up without notice. This seems to happen every 3-5 days. The
> machine is on 7x24, used in a business setting, and cannot be shut off. It
> doesn't hibernate or anything.
>
> My suspicion in my case is that it could be video related (Nvidia 7600GS). I
> had hoped that the latest drivers would fix it, but not the case. I've loaded
> the Microsoft DebugDiag tool to see if it can log anything the next time it
> fails.
>
> This has been a persistent annoyance since I installed (clean) the OS. If I
> isolate the cause/solution, you can bet I'll post it.
>
> Phil
>[/color]