Pdoxusrs.lck: why it increase ....

Hello everybody,

Delphi 2.0 application on a network drive, a read-only query updated
(close; open) by a timer every 30 sec. and a pdoxusrs.lck that increase
at every timer event.

Why ?

At the end of a day the file is about 30 Mb large, when the last user
close the application pdoxusrs.lck is deleted.

The query is like a stupid 'Select * from x left join y On
x.ICode=y.Icode where x.foo='nothing''