I have this problem where a access database is located on a server and currently accessed by about 6 machines using a VB front end

For some reason the access database cannot now be written to. The application will not allow the database to be saved.

When opening the database on the server it says that the database is read only (when this is not the case) and you can't do things like compact and repair, remove or rename the file.

Why does this happen, even the locking file isn't there?....