I am running Windows XP, MS Access 2000, with all patches. I have a
huge DB, 30 users, split front and back end, etc. I have not been
having this problem until recently.

Access closes unexpectededly with no errors, or messages, and only
when I am on a specific screen. I have this one screen that contains 6
sub forms that are not nested, and a combo box. Selecting an item in
the combo box filters the first subform. Selecting an item there
filters the next sub form and so on.

This screen works fine most of the time, but I will experience the
unexplained shut down about 15% of the time. Does anyone have any
ideas?