I have been having a few problems with files remaining locked when not in use in acad. Specifically it involves one client trying to open a file exported as a wblock from another client. The wblock is not open on client 1. If this is unclear or you have a similar experience and aknow a workaround, lemme know. It is not always reproducible, I would be happy to pprovied my smb.conf. Thanks, Kris Bodenheimer