$ sudo yum check-update Loading "installonlyn" plugin Setting up repositories Error: Cannot find a valid baseurl for repo: core $ I didn't make any manual changes to yum's configuration files, they system was always updated with "sudo yum update". This is an FC6 machine that is headless. TIA -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list