This might be the wrong board, sorry about that.
I got this nice little error: http://i.imgur.com/QzFFA.jpg
And yep, it's not my connection. It works flawless on my notebook, just not on my other PC. I tried deinstallig the game itself (Dark Souls) and the GFWL programs. Ports are open. This problem is beginning to drive me nuts and I really could need a hand with it.
Thanks in advance.