I don't use plymouth. Can fedup be used to go F17 -> F18 without having it used\installed. Asking as it's was the last entry in a bz I had: https://bugzilla.redhat.com/show_bug.cgi?id=880679 From the bz, was\is there anything I may have overlooked. (also tested with --disablerepo=* --enablerepo=fedora) Frank