I tried using update manager but midway I had to stop it and log out and now everything is messed up. I typed,
sudo apt-get upgrade
To get the upgrade to complete and it failed whenever I open Update Manager I get the following error: Not all updates can be installed
and then it goes on to talk about partial upgrades and says that, "This can be caused by: A previous upgrade which didn't complete"
Some other problems include no unity panel even when I start the app, when I log out and log back in the only desktop environments were: one Cairo-Dock, (GNOME) GNOME (without effects) GNOME
Please help me I am desperate the only solution I can think of is removing Ubuntu and installing 12.10 from scratch.