This is definitely still a bug in gutsy up to today. It would be nice if it were fixed by Gutsy's release, as it should just be another rm statement in postrm. Flipping between nvidia-glx/nvidia-glx-new is pretty common for people who are trying to troubleshoot desktop-effects glitches and this is a highly nontrivial nuance to find.
This is definitely still a bug in gutsy up to today. It would be nice if it were fixed by Gutsy's release, as it should just be another rm statement in postrm. Flipping between nvidia- glx/nvidia- glx-new is pretty common for people who are trying to troubleshoot desktop-effects glitches and this is a highly nontrivial nuance to find.