When running Soldat in a fullscreen and playing in another servers it just stops.. and I must press the power button and shutdown computer..

When you play in the server does it say "Timeout" or something like that to you? Because that stops the game.
It means you have a slow internet connection (I guess).

Have you tried ctrl+alt+deleteing? Is the computer frozen or what? I've only had the game for 3 days, and I've found quite a bit of annyoing bugs. Like the controls just freeze when the game minimizes for some reason. Only menus work somehow, not mouse buttons. I just push alt+f4 to quit. Also, there's an access error or something like that if you have show intro checked under the more tab.

We'll need more information other than "it just stops."

Ok, It's not Connection Timeout.

When I'm just playing in fullscreen.. I play play play then, The screen just freezes. I don't hear sounds only if I have any, example: Winamp or Windows Media Player playing on background their music just plays but I can't change the song with my keyboard hotkeys.
So, I'm trying to press alt+F4, nothing happens. Then I press ctrl+alt+del, nothing happens. I only have this bug on my own computer but not at my old one (it has win98).
So I hate cuz I must press the power button to shutdown computer.