Records Getting Deleted Mysteriously..

I'm running a DB using MSDE (2000) that is interfaced by 2 different
ades running on PCs with Access 2000 Runtime. One of the ADEs is a
package accounting system that is very solid and stable, the other is
a custom application that I wrote (much less solid and stable). The
custom app only deals with a select few tables in the database, and
the table in question is not one of those.
With alarming regularity(daily), records are getting deleted out of a
particular table. I've set up a couple of dummy records in the table
and put a delete trigger on the table that creates record in a 'log'
table that tells me the user and the time that the records are
deleted.
The deletion (all records in the table) always occurs during business
hours (never over the weekend or at night) and the user responsible
varies among 3 or 4 different users. 2 of those users don't even have
rights to that table, so I'm really confused how those logins could
cause a delete on the table they don't have access to!??!
As far as I can tell, this is only happening to this particular table
( I hope!).
Is there a way that I can get more information on the process or
machine or anything else that is behind the deletion?