ben@ben-laptop:~$ sudo apt-get install kubuntu-desktop
Reading package lists... Done
Building dependency tree
Reading state information... Done
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:
  kubuntu-desktop: Depends: language-selector-qt but it is not going to be installed
                   Depends: software-properties-kde but it is not going to be installed
                   Recommends: apport-kde but it is not going to be installed
                   Recommends: apturl-kde but it is not going to be installed
                   Recommends: freespacenotifier but it is not going to be installed
                   Recommends: install-package but it is not going to be installed
                   Recommends: jockey-kde but it is not going to be installed
                   Recommends: kpackagekit but it is not going to be installed
                   Recommends: kubuntu-firefox-installer but it is not going to be installed
                   Recommends: kubuntu-notification-helper but it is not going to be installed
                   Recommends: plasma-widget-facebook but it is not going to be installed
                   Recommends: printer-applet but it is not going to be installed
                   Recommends: system-config-printer-kde but it is not going to be installed
                   Recommends: usb-creator-kde but it is not going to be installed
                   Recommends: userconfig but it is not going to be installed
E: Broken packages