Tons of problems with AMD64/ATi/Fedora Core 5 build.

[esteel]

Normaly this lag is a problem with the sdl.. try to use the nexuiz-linux-686-glx binary. (I guess you use nexuiz-linux.sh to start nexuiz it will use the -sdl version, just edit it or better copy and edit it . The next version will have scripts for both binaries named nexuiz-linux-glx.sh and nexuiz-linux-sdl.sh)

Did you use the official binaries? There seems to be a bug when compiling with gcc 4.1 that can cause those problems. Or can you tell us the error message? If you start if from a console you should see one..