If it ain’t broke… break it
I decided, oddly, to update my graphics driver under Linux. Why? Fuck if I know. The newest .run from nvidia's site installs, but breaks a few things for me (notably X, which complains of a version mismatch between the loaded module and the desired module). Well, I uninstalled that and got the old drivers working and X was back and all was well. Except I lost OpenGL... What? How? Currently I am (re)installing the linux-restricted-drivers package from command line as well as posting this from command line. Fun stuff, eh?
Oh, look. X is back. Still don't have GLX, though, despite the apt-get install nvidia-glx-new I just did. Argh. Not that OpenGL is much use with a broken graphics card, but I don't like the fact that it just doesn't work for seemingly no reason at all.