Who has the database open , I had a utility from MS a few years ago that listed the users of the database by opening the ldb file. I cant seem to find that program now but there are a number of options some of which I may start to add to future programs.
If you have anything to add to the list please leave a comment and I will update the post
1. An ldb viewer access form from the access web – click here
2. An application posted on Utter Access from Brent – datAdrenaline
3. Explanation of the ldb viewer
4. Explanation of the UserRoster database from microsoft
5. Granite links to open databases and database corruption
6. How to read ldb files