>Okay, how does VFP issue record locks on table when a user does something to the record? Are these locks issued on the table header of the DBF file?

VFP locks only the record when a user is making changes to it. When and for how long the record is locked depends on the buffering scheme of the current cursor. The only time that VFP puts a lock on the table header is when adding a record (locks the header to increment its record count) and when executing a DELETE or REPLACE command that has been issued with the FOR clause.