[lch]

Huh. Suddenly, llamabeast posts! Dozens of them!

First, it's hard to help you without knowing the specific settings that you use to set up the game. You have to tell about maps, mods etc. if one were to duplicate your efforts.

Second, you should try reinstalling the game from scratch and then updating to the latest patch. It seems that some people's game installation was broken in a way after patching that required a full reinstallation. There was a second patch just for the Linux version, too. Have you tried creating the game with both the original and the new patch?