Upgrading FC6 using yumex produces the following error box: /nError checking package signatures: exceptions.AttributeError The following extract from the output log indicates that something may be wrong with the repo, especially since I don't have this problem when upgrading only packages in the extras repo. ... ---> Package tar.x86_64 2:1.15.1-21.fc6 set to be updated --> Running transaction check Downloading Packages: Checking GPG Signatures: Public key for qt-3.3.7-0.1.fc6.x86_64.rpm is not installed Retrieving GPG key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora ... Any ideas what's going on? Thanks - jon