Comment 2 for bug 144899

I have seen this same bug. I saw an error relating to nvidia-glx while upgrading. I have also seen the same error message if I go to synaptic->Status->Not installed (residual config) and try to purge nvidia-glx there. The error I get is:

E: nvidia-glx: subprocess post-removal script returned error exit status 2

nvidia-glx does not seem to be able to uninstall itself properly.