samba - May 2006 - connections.tdb file keeps growing.

Hi,
   I think I've found the cause of the large smbd processes.

Does each smbd process keep a pointer to the connections.tdb file?  This 
keeps growing
and is currently over 20MB in size despite there being only 40 current 
users and 80 smbd
processes?

smbstatus reports services being accessed and files locked by non 
existent pids
which are over a month old.

Samba 3.0.21c on Solaris 10

Is there any way to force samba to refresh / clear out this file or does 
it require a restart?

Cheers,
          Duncan