How do I undo rpmforge yum updates?

Question

I'm setting up a new system with CentOS 5.5, and I set up rpmforge to make it easier to get those extra 3rd party packages. I ran yum update without setting up yum-priorities first, but now I wish I could go back and change that. I have yum-priorities set up now, so is there a way to un-do the yum update without re-installing? If I have to re-install it's no big deal, I'd just rather save myself the time.

Answer 1

I'd first remove (or disable) rpmforge and then try yum distro-sync.

Answer 2

The above answer, distro-sync would have worked if it was Fedora Core, but CentOS doesn't use that version of YUM (yet). I wound up having to re-install.