nteresting timing… I’m about to embark on a project to do the same thing (populating from PeopleSoft).
There were a few things we found too regarding the User Info list/table in portals and WSS sites. I have everything jotten down in a few disorganized notes that I planned to post about later… I’ll reply to the group once I do that. In my mind, it’s not just updating the profile database that’s necessary… you need to keep the User Info table in sync as well (via the API, not going to the table directly).