We're using PC 10.4, and have applied the 10/27/08 update.
A newly added record isn't showing up in any reports. We can find the record with 'find' and 'locate' buttons, but it does not list in reports from personal profiles, family mailing list or ministry services.
Take a look at the "Include in Membership Module Reports" check box on the Integrated Data Entry screen or Maintain Family Mailing List. This will keep the family and each of its members from ever showing in any of the reports found under the Membership menu.