Downgrading from F14 to F13

[Bruno Wolff III]

On Thu, Nov 11, 2010 at 20:32:26 +0000,
  Mark Eggers <mdeggers at gmail.com> wrote:
> 
> So, is there any clean way to downgrade F14 to F13 other than backing up 
> the requisite files and doing a clean install?

You could try downgrading fedora-release and then try yum distro-sync.
probably they'll be a lot of manual clean up. A fresh install is likely
to be less work.