Hmmm, How are you generating your PKs? Maybe you have a conflict with how you generate these with respect to multiple users. If just 1 workstation is running the app with the database on the file server, you do not have any problem correct? If this is so, then I would suspect the PK generator is the problem. Otherwise, it is possible that there is a connection or hub problem.

>W2000Server with W2000Workstation and VFP6.0SP4-runtime
>exclusive=off
>multilocks=on
>buffering row and table for child optimistic
>form with private datasession with setting of excl, multilocks, deleted specified
>deleted=on