Use: Linux port of the "Enhanced OpenGL Renderer"
Game: Unreal Tournament
See you already have a version there, but that did not work for me.
Found this one here:
http://forums.gentoo.org/viewtopic-t-452678.html
And it works flawless

Maybe linux players might need it too.
EDIT:
Yeah, I saw it, its the same source. But still the "OpenGLDrv.so" file if your archived version is at 235.1 kb, and that version is not working for me.
When I downloaded it from the source it is 201.8 kb and working, dunno if he did some changes and the version you got was early or something...
sXe