I am having one experience which i need to share with the all. I am having lots of problem with the Call Of Duty Black Ops which is not working with the multiplayer game. The game always crashes while playing on the server and giving the error with the DirectX.
I have tried a lot solution for same which i got from Google but nothing working with the issue. Finally i have remove the Avira Antivirus program from my system and after that when i started paying the Call Of Duty Black Ops, I am not more getting the issue of crashing. Now i can easily play the game on Multplayer server.
So sharing the experience with all of you hopping that if you are also getting the problem then it is better to remove the Avirta if you are running and see whether it is working with the issue of yours or not.