xbsql's upgrade path is broken: 3: 0:0.11-6.fc3 4: 0:0.11-5.fc4 5: 0:0.11-5.fc5 6: 0:0.11-5.fc5 The FC-3 one is newer than the others. https://www.redhat.com/archives/fedora-extras-list/2006-May/msg00083.html
Resolved with builds of -6 for everyone!