failed to load sesison ubuntu

I just came across this issue with upgrading packages in 12.04 before I made the upgrade to 12.10 (since I've been having issues with ATi graphics drivers). On load I couldn't get into my session. What I did was CTRL+ALT+F1 to get to console, logged in and then ran sudo apt-get update && sudo apt-get upgrade This seemed to installed XWindow stuff that was missing that I think was causing my issue.