We are using Interbase 6.0.1 to drive our internal contact management
application (developed in-house). Two times since it's release
(2/9/2002) Interbase has terminated unexpectedly because of a lock
manager error. The following was extracted from the interbase
logfile, and was followed by interbase shutting down and guardian
restarting it.

XXXXXX (Server) Tue Feb 19 12:09:07 2002
Fatal lock manager error: invalid lock id (0), errno: 0

Can anyone tell me the source of this error?