samba - Jan 2000 - 2.0.6 out of connection structures

The following has popped up (once) in our Samba log:

[2000/01/07 09:36:10, 1] smbd/conn.c:conn_new(104)
  ERROR! Out of connection structures
[2000/01/07 09:36:10, 0] smbd/service.c:make_connection(276)
  Couldn't find free connection.
[2000/01/07 09:36:10, 0] lib/fault.c:fault_report(40)
  ==============================================================[2000/01/07
09:36:10, 0] lib/fault.c:fault_report(41)
  INTERNAL ERROR: Signal 11 in pid 11523 (2.0.6)
  Please read the file BUGS.txt in the distribution
[2000/01/07 09:36:10, 0] lib/fault.c:fault_report(43)
  ==============================================================[2000/01/07
09:36:10, 0] lib/util.c:smb_panic(2456)
  PANIC: internal error

I don't know what triggered it and, apparently, a core file
wasn't generated.  This should give a rough idea of server
activity:

# /usr/local/samba/bin/smbstatus | wc
     133    1333   12920

Any ideas?

Simon