When i play for a longer Period of Time, the Game Screen suddenly turns white. Mouse Actions (Move, Klick, ...) and Keystrokes return the usual Noises - the Game is obviously still running, nevertheless i can't see anything but a White Screen. In this State it remains possible to switch to the Desktop sometimes, but i have to shut down the Client by Windows Task Manager's Force then.

When this happens during a Zombie-Attack, i can do nothing but hear my Character been beaten to Death.