Update Manager Smack-Down
If you have problems with your update manager trying to install useless packages and partial updates that don’t seem to ever friggen install… here’s how to wipe it clean and get a fresh start on life:
Open terminal and type “sudo apt-get clean all”
(This will flush the update manager cache)
Then type “sudo apt-get autoremove”
(This will remove all orphan packages, probably from programs you installed and then uninstalled, or packages that have no linkages to anything and are just taking up space).
Then, to reset the update manager type “sudo apt-get update” and “sudo apt-get upgrade”
That is all. Be gone with you.