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milo@milo-VirtualBox:~$ sudo apt-get install gnome-shell-extensions-common gnome-shell-extensions-user-theme

Reading package lists... Done

Building dependency tree      

Reading state information... Done

gnome-shell-extensions-common is already the newest version.

Some packages could not be installed. This may mean that you have

requested an impossible situation or if you are using the unstable

distribution that some required packages have not yet been created

or been moved out of Incoming.

The following information may help to resolve the situation:

 

The following packages have unmet dependencies:

 gnome-shell-extensions : Conflicts: gnome-shell-extensions-user-theme but 3.2.0-2~webupd8~oneiric is to be installed

E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.