Unmet Dependencies on Lubuntu 13.10 Desktop

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I'm a newbie to ROS and Linux. I have Lubuntu 13.10 installed on my laptop and I want to install ROS. When I go to install ROS (Precise version), I get "unmet dependencies" and the install fails.

Should I be installing ROS on Lubuntu in the first place? This is an old laptop so I wanted as thin a version of Ubuntu as possible and I believe that Lubuntu 13.10 (Saucy Salamander) has the same core as Ubuntu 12.04 (Precise).

Am I headed in the right direction? How can I resolve these "unmet dependencies"? I believe the "sudo apt-get update" was successful.

Incidentally, these are the unmet dependencies I'm getting:

The following packages have unmet dependencies:
 ros-hydro-desktop-full : Depends: ros-hydro-desktop but it is not going to be installed
                          Depends: ros-hydro-mobile but it is not going to be installed
                          Depends: ros-hydro-perception but it is not going to be installed
                          Depends: ros-hydro-simulators but it is not going to be installed
E: Unable to correct problems, you have held broken packages.