I retried the hack and it, as before, successfully changed my user name from jonau99 to JonJon BUT it did Not re-associate all my past messages to my new user name. All my past messages say posted by jonau99...an Unregistered user. UBB did not know that jonau99 and JonJon is one and the same person.
I am running UBB version 5.45c on an Apache UNIX webserver at
http://bbforum.virtualave.net