Comment 26 for bug 570394

I've noticed that if you install from the nvidia installer from nvidia's webiste, it sets up libglx.so as a symbolic link (eg /usr/lib/xorg/modules/extensions/libglx.so -> libglx.so.256.35), but xserver package upgrades will overwrite this link with a non-nvidia library. This then stops 3d effects from working until you reinstall the nvidia drivers (or manually correct the link). Could the same thing be happening to the jockey installation?