I believe I have corrupted all of my keyrings while trying to add keyrings for extra repositories. I foolishly moved some keyring files around in a console, and now my system is in a state such that apt-get and Ubuntu Software Center don't work any more. Ubuntu Software Center displays the following error message when trying to update packages:
Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade.
Please report this bug against the 'update-manager' package and include the following error message: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
Is there something I can do to repair my keyrings? Alternatively, if I absolutely have to just reinstall everything, is there an easy way to do this?