Did a preupgrade to F15. That left a lot of dupes - 1187 of them. Ran package-cleanup --cleandupes. That didn't work. Got endless: error: rpmdbNextIterator: skipping h# 918 Header V3 RSA/SHA256 Signature, key ID 97A1071f: BAD What is this? Do I need new public keys? If so, how to install? sean