I'm running 13.04, and work in Cinnamon. Today, I updated everything that was suggested. When the update finished, I restarted. Cinnamon crashed, sending me to gnome fallback. Gnome fallback worked OK. I figured I might get cinnamon back by running
sudo apt-get update && sudo apt-get dist-upgrade just to make sure that everything is at its latest version.
On doing so, Gnome fallback breaks -- specifically, moving to a different workspace leads me to a blank screen (with a mouse) from which I can do nothing. There are also other bugs -- windows don't get recognized as such when you right click their upper bars (for example, to send them to a different workspace).
I am now working in Unity, in which my productivity is quite bad.
Does this problem sound like a known problem? Any way to fix besides reinstalling ubuntu?