Have had same database running fine for 6+ years. With a few new users added in past few months, suddenly encountering some problems with 1 particular table. The table is a "source code" table containing 3 fields (unique id auto-number, code (text field), description, and active (yes/no field). I have a query based on this table that returns all active source codes. On 3 forms, there are combo boxes which have limit-to-list set to yes, where the user selects the correct source code from the list. For some reason, lately one or two of the "code" field is changing in my table. It's almost as though someone is "overwriting" the field through the combo box. Is that possible? Today I've also noticed that a few of the records in the table are actually missing. Any idea on how this can be happening?