Opening the Ubuntu software center yields an error that says:
Items cannot be installed or removed until the package catalog is repaired. Do you want to repair it now?
After clicking repair, the following error is returned:
Package dependencies cannot be resolved
After doing some research, many people suggest running:
sudo apt-get -f install
However, it returns:
Correcting dependencies... failed.
The following packages have unmet dependencies:
libnss3-1d: Depends: libnss3 (= 2:3.16.3-1ubuntu1) but 3.15.4-0ubuntu0.12.04.3
is installed
libnss3-nssdb : Depends: libnss3 (=2:3.16.3-1ubuntu1) but 3.15.4-0ubuntu0.12.04.3 is installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
E: Unable to correct dependencies
I have no idea where to go from here. If I recall correctly, I was trying to install a flash plug in for Firefox, because youtube was occasionally throwing me an error and telling me to upgrade flash player.
This error is especially frustrating, as I cannot install software until it is resolved. It is worth noting that I have also tried using Synaptic Package Manager's "fix broken dependencies" or whatever, and it didn't work.