This is an upstream bugfix which resolves numerous issues. For full details, refer to the upstream release notes:
http://projects.puppetlabs.com/projects/facter/wiki
In addition, this update applies a backported fix for the virtual fact when facter is run by a non-root user:
Please login to add feedback.
This update has been submitted for testing by tmz.
This update is currently being pushed to the Fedora EPEL 6 testing updates repository.
This update has been pushed to testing
This update has been obsoleted by https://admin.fedoraproject.org/updates/facter-1.6.18-3.el6