Shaders are disabled

[Nokim]

Some time ago game stopped using shaders. I thought it was related to memory problems and didn't care much. That problem solved in some way but shaders left disabled. If i try to enable them and related stuff like postprocessing i got such messages in ufoconsole.log and disabled shaders:

2012/06/22 18:38:09 R_ProgramVariable: "TANGENTS" - No program bound.
2012/06/22 18:38:09 R_ProgramVariable: "NEXT_FRAME_VERTS" - No program bound.
2012/06/22 18:38:09 R_ProgramVariable: "NEXT_FRAME_NORMALS" - No program bound.
2012/06/22 18:38:09 R_ProgramVariable: "NEXT_FRAME_TANGENTS" - No program bound.

[Nokim]

Additional info: glxinfo says that GLSL 1.2 supported by system but game fails to compile shaders complaining about features supported only since GLSL 1.20! If i manually change config.cfg to use 1.1 - all works fine.