Hi

I'm getting this:

Code:
sudo apt-get install linux-source linux-headers-generic

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:
 linux-headers-generic : Depends: linux-headers-3.8.0-12-generic but it is not installable
E: Unable to correct problems, you have held broken packages.
Any ideas?
I had some packages that were not upgrade, essentially linux-image\linux-headers and libreoffice.
I've removed all the packages, but I can't install any of them:

Code:
sudo apt-get install libreoffice-base-core
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:
 libreoffice-base-core : Depends: libreoffice-core (= 1:4.0.1-0ubuntu1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
What can I do to fix this?

Thanks