samba - Mar 2004 - connections.tdb corruption after changing domain

I'm using Samba 3.0.2a on Linux, acting as a PDC.  When I change the
"workgroup = " line in smb.conf in order to change the domain being
served, I get this error whenever someone tries to connect:

  Mar 19 22:02:47 myhost smbd[6861]:   claim_connection: traverse of
connections.tdb failed with error Locking error.

The client computer gets the "resources not available" error.

Deleting connections.tdb and restarting smbd fixes the problem.

Is this a problem in Samba or is something wrong with my setup?

No one responded the first time I sent this out, so I'll try again.
Samba 3.02a on Linux.  When I change the "workgroup =" line in
smb.conf
and restart Samba, I get this error whenever a client tries to connect:

 Mar 19 22:02:47 myhost smbd[6861]:   claim_connection: traverse of
connections.tdb failed with error Locking error.
 
The client computer gets the "resources not available" error.

Deleting connections.tdb and restarting smbd fixes the problem.
 
Is this a problem in Samba or is something wrong with my setup?
I didn't see anything in Bugzilla, should I file a bug report?