Strange bug with the camera

Hey all,

the game usually runs fine on my machine:

Athlon x2 5600+

2GB

8600gt

XP 32

well as mentioned in the title already, theres a bug with the camera. I´ve been in a 3vs3 lobby and we wanted to play prison. The game crashed within the loading screen saying [no text] at the bottom.     <----- thats what happend

right after that i restarted the game and wanted to play a new one. As i entered the game, the camera started turning continuosly. It doesnt stop and i dont know how to stop that. I alttabbed out and  back in. Still turning. Quitted game again, restarted it the second time... Still turning...And dont get me wrong please im no computer newb i recognise when a key is still pressed accidentially on my keyboard This is not the case! Verifying the game in the Impulse menu didn´t help either.

The only way i found to get rid of that is to restart my machine. Which is kinda strange imho.

Any ideas?

kind regards^^