Have you tried and simply waited it out?
I personally haven't had this problem, but then again I compiled it from source and am running Pclos with Xfce
, not that it would matter (I'd think).
Have you tried reducing your texture size, turning off shadows and screen-shake? Have you disabled compiz (or whatever's the equivalent) in KDE?? Sometimes Warzone doesn't play fair when your compiz-equivalent is enabled.
Or, the problem could be even be worse; your graphics card has poor OpenGL support. (but if Warzone *HAD* been running just fine before it decided to act up, I don't see a problem here)