Couldn't register domain?

[Matthew Harrell]

What do these log messages mean?

  12/19/1997 14:29:09 netbios nameserver version 1.9.18alpha13 started
  Copyright Andrew Tridgell 1994-1997
  12/19/1997 14:29:09 become_domain_master_browser_wins: attempting to become domain master browser on workgroup COAA, subnet UNICAST_SUBNET.
  become_domain_master_browser_wins: querying WINS server at IP 38.178.252.3 for domain master browser name COAA<1b> on workgroup COAA
  register_name_response: server at IP 38.178.252.3 rejected our name registration of COAA<1b> with error code 5.
  become_domain_master_fail: Failed to become a domain master browser for workgroup COAA on subnet UNICAST_SUBNET. Couldn't register name COAA<1b>.
  standard_fail_register: Failed to register/refresh name COAA<1b> on subnet UNICAST_SUBNET

This system is supposed to be a backup server and the preferred master flag
is set to "no", but I'm getting the problem that I can't even see the system
name in the browse list on the master and when I do a smbclient on this system
(an SGI) then it only shows itself in the browse list and the fact that it is
the master of the workgroup.  Even when I turn off the options to have it 
challenge the master servers it never seems to appear in the browse lists.
Any ideas?

-- 
  Matthew Harrell                          Preserve wildlife --
  Simulation Technology Division, SAIC      pickle a squirrel today!
  mharrell at std.saic.com
-------------- next part --------------
;
;  smb.conf
;

;
;  Global parameters
;
[global]
  auto services       = pub
  browse list         = yes
  case sensitive      = yes
  ; debug level         = 5
  default service     = pub
  ; domain controller   = 199.42.3.200
  domain master       = yes
  encrypt passwords   = yes
  getwd cache         = yes
  guest account       = nobody
  ; hosts allow         = loopback 206.5.183.128/255.255.255.192
  interfaces          = 38.178.252.4/255.255.255.0
  load printers       = yes
  local master        = yes
  max xmit            = 4096
  ; message command     = /usr/X11/bin/xmessage `cat %s` -display :0.0;rm -f %s&
  null passwords      = no
  os level            = 32
  ; password level      = 1
  ; password server     = jpsd1
  preferred master    = no
  ; preserve case       = yes
  printcap name       = /etc/printcap
  printing            = plp
  read prediction     = yes
  read raw            = yes
  read size           = 16384
  ; remote announce     = <domain ip mask> / <domain root minus .com>
  security            = user
  server string       = Gonorrhea (%h)
  short preserve case = no
  ; socket options      = TCP_NODELAY
   ;                    SO_KEEPALIVE IPTOS_LOWDELAY IPTOS_THROUGHPUT \
   ;                    SO_SNDBUF=65536 SO_RCVBUF=65536
  status              = yes
  syslog only         = no
  ; wins proxy          = yes
  wins server         = 38.178.252.3
  ; wins support        = yes
  workgroup           = COAA
  write raw           = yes


;
;  Home directory
;   note: these are restricted to the users who have valid accounts
;
[homes]
  alternate permissions = yes
  available             = yes
  browseable            = no
  comment               = Home Directory
  create mode           = 0750
  fake oplocks          = yes
  public                = no
  read only             = no

;
;  Matt's Dumping Ground
;   note: at the moment, this is the anonymous ftp account
;
[pub]
  available       = yes
  browseable      = yes
  comment         = Matt's Dumping Ground
  create mode     = 0765
  fake oplocks    = yes
  locking         = no
  path            = /usr/users/ftp/pub
  public          = yes
  read only       = yes
  wide links      = no

;
;  Public printers
;
[printers]
  available       = no
  browseable      = no
  comment         = Public Printers
  create mode     = 0700
  path            = /usr/spool/uucppublic
  printable       = yes
  writable        = no
  public          = yes