Are you using optimistic or pessimistic buffering? Are they adding or modifying the record?

>When 2 users running the same form do data entry together over a network, somehow they will overwrite a record of each other. The field of the primary key is not changed, but all other fields are over written.
>
>All tables are already set to table buffering.
>Running on NT Server 4.0 SP5.
>No problem if only 1 user data entry.