Try posting your database. To remove private information and reduce the size of the database, do this:
1. Make a copy of your db.
2. If using Access 2007, convert the database to an mdb format.
3. Remove all tables, queries, forms, pages and reports that have nothing to do with the problem.
4. Delete all but 6-12 records in the remaining tables - use shift / Mouse select to select huge blocks of records, then delete. Change the data on the remaining records to remove any confidential information.
5. Import all linked tables so that everything is in the one database
6. Remove any passwords.
7. Disable all Startup options.
8. Compact and repair
9. Move the database to a different folder to make sure it still runs showing the problem
10. Post explicit steps to recreate the issue.
11. Zip (optional) and attach to a message.
... Again, test the DB before posting to make sure that we can open the DB and easily see the issue.