OD Binding & Joining Kerberos Realm

Im testing Leopard server in the lab and am having problems joining my file server to the kerberos realm hosted by the ODM. In my best efforts I have gotten the "Join Kerberos" button to vanish and in my worst it's not; in either case though Server Admin shows the role as connected and keberos as stopped with the indicator circle being gray. On the ODM however LDAP Server, Password Server, and Kerberos all list as running and the indicator is green. In my tests the servers were installed as Advanced and patched up to 10.5.4 with the combo updater before any promoting of roles or attempting binding. The logs don't appear to show me anything unusual and I'm about 99.9% positive that my dns has been fully functional. So… Obviously something is wrong. I'm going to wipe the slate here and reinstall server on the two machines and patch them up again. And therein I turn to you all. Can someone provide me with a walk along of how I should be doing this? I've checked the usual boards and lists, I've read the docs, and I never had this problem with Tiger so somewhere my brain is shorting. Anyone care to help? Thanks!