Well, Skuzzy was partially right...
I found one malware program with Ad-aware...
...but deleting it didn't solve the problem although the game stayed up a lot longer before the lock up (might be some normal "variance") and when it happened there was no sound...allhough it has locked up quietly couple of times before aswell.
Game still runs with 2x speed also.
![Sad :(](http://bbs.hitechcreations.com/smf/Smileys/default/frown1.gif)
Running out of options here...
At any rate, thanks for the suggestions guys!
![Smiley :)](http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)
EDIT/Just a note, MS Flight Simulator has exact same symptoms./EDIT