Have you gotten everyone out of the file?
You would have to build a function into your database to allow you to "kick"
people out. Since you don't have that in place, I'd suggest you personally
notify each user to get out of the file. If the ldb remains once everyone
is out, then someone with proper access would need to delete the ldb file.
If you take away everyone's access to that folder, then add it back, I think
it will also kick them out, but could corupt the file.
Rick B