I just came across another thing:
I was tweaking ROM-C 3 "BadCntaxHS" - and changed it from mono to poly, and suddenly it started making a whole lot of noise, when I play more than one note at a time...
Check it out:
http://www.stormclements.dk/mp3/Virus%20Noise.mp3
It's not directly related to the other problem I have experienced, but maybe they are both symptoms of a sick DSP unit or something...
And it's not the converters of my RME soundcard that are being overdriven - it was recorded at around -30db... And it sounds the same in the headphones...
This really makes nervous, 'cause something similar happened to my old virus indigo just before it crashed and totally died....
If somebody would please try to do the same thing with the same sound to see if it's not just my TI2, I would be really grateful!!