Created attachment 622258 [details] .xsession-errors from this session I did an OS update last night. When I booted up this morning, I got a desktop with nautilus running but no gnome-shell. Reverting the OS update didn't fix the problem. I do have gnome-shell-3.2.2.1-1.fc16.x86_64 installed.
Created attachment 622265 [details] List of packages updated Hmm, my "yum history undo" didn't seem to revert most of the updated packages. I'm attaching a list of what got updated. Also note that if I hit Ctrl+Alt+F2 and log in on the other VT, I can "setenv DISPLAY :0.0" and start gnome-shell there and everything works fine.
This was fixed for me after installing some later updates.