I have an Access 2002 database with user-level security that is split into a front end and back end. When I'm logged into the network as administrator, everything works great. When I'm logged into the network as a user, I get different messages. If I try to log into the database using a "full permissions" account, it tells me that the database is read-only and then opens the db. If I try to log into the database using a "read-only" user account I get a "could not lock file" message and the db is not opened. What's going on?