Microsoft Access anomaly

in our company we do have a MS Access database from two years now. It is also shared accross the network and sometimes there may be 6 persons working at the same time.

This last week we have encountered a strange behaviour, some of the tables, at a certain point are completely empty, not deleted but all of the rows are missing. This happened tw times by now, but looks like it will happen again and we don’t know what causes it.

Anyone has had this before? Could there be a solution, except from formating the PC :)?

Thank you, Toni