I have three users setup using Oracle Connector 10.1.2 and Outlook 2003 sp3. User A has a contact and calendar that is shared with User B. User C has access to User A's contacts. User B has no issues with User A's calendar, however changes User C makes to contacts disappear after a period of time, User B can also not see these changes either. User A has no issues seeing changes made to the contacts or the calendars.
What may be causing the contacts to not work properly on User A or User B's machine?