I've installed backtrack 5 R2 on my computer and everything works fine but the video driver. The solution described here does work, but whenever I start the graphics mode, a message saying that the graphics card doesn't support the configuration that is loaded.

I don't know why this is happening. It doesn't change the performance of my computer, but I'd like to know why the message is arising, and what I can do to stop it. Alternatively, where can I find the configuration file that would help me understand what's going on?