Access Data Loss Problem

Hi,

I'm a network manager at a school running 5 windows server 2003 servers (3 of which are DCs) and 350 windows XP clients. Network speed and traffic is excellent and most of the time the only software used is microsoft office. Most computers run office 2003 but some have office xp.

Here are a few scenarios of the problems:

Scenario 1
A teacher looks back at some work of a student who left a year or so ago to find all work as expected however all access databases are empty (no tables, forms etc. Just blank database files)

Scenario 2
A student says they were working on an access file only moments ago and everything vanished (resulting in a blank database file). They claim the file has been there for weeks, and has had data in it for weeks. They have been working on it a number of times a week. When I look through the backups, the database file exists but is empty on every occasion.

This problem occurs over 4 ICT suites (120 computers) at random and is always a different user. There seem to be no patterns. We get the Scenario 2 problem about once or twice a month, although sometimes a lot more and sometimes a lot less.

Any ideas or comments?! (I need some response even if it's not very helpful!)

Thanks,

Jonathan