We use the internal as well as an LDAP based directory for managing our users, but accidentally had created a user in the internal directory which should have been imported later on from the external one.
Because of that I intended to rename this user and deactivate it using the new "rename user" feature in Confluence 5.3. Sadly, for some reason the username field in the user admin is still read-only. Could this be caused, for instance, by the order of the user directories or what else could cause this?