Yes, you're so right! I'm programmer, too, so I can imaging how much it helps.
The last time I've heard it, is just a few minutes ago. This time, I've loaded a Cubase project file I've created this day on another computer. During this loading process the error occured. I remember that at this point of time the "Asio DirectX Full Duplex Driver" was still selected instead of the "Virus USB Asio Driver" I have changed to afterwards. After finishing loading the the "satan saws" turned into a noise of a old vinyl player. No further output was possible. After closing the project and restarting the synth it was gone, even after loading the project in the same way. So again not reproducable. And this after producing 8 hours at a stretch without any problems before.
I will test it again tomorrow evening and try to enforce the error and try to document the process as detailed I can.