I am afraid corruption is still there.
I made a fresh install of XP 32bit since I flashed 0601.
I run at fsb 1800 linked and synched. I had memtest for over 2 hours and 8+ hours of CPU Stress MT, everything stable.

1 hour ago, out of nowhere, I got a BSOD "bad pool caller".
I rebooted and got the message that the registry was restored from an older version. Since then, I was unable to install games because windows installer service could not be found.
I had to restore XP to some point prior to my BSOD to get everything right again :-(