samba - Jan 2008 - Unmatched entries - Failed to Create Administrators/Users/

With a recent upgrade to Centos 4.6 my system's Samba was also upgraded
to 3.0.25b.  Now I get the following errors in my log every day.

> **Unmatched Entries**
> auth/auth_util.c:create_builtin_administrators(792) 
create_builtin_administrators: Failed to create Administrators : 1430 Time(s)
> auth/auth_util.c:create_builtin_users(758)  create_builtin_users: Failed to
create Users : 1430 Time(s)
> lib/util_sock.c:get_peer_addr(1232)  getpeername failed. Error was
Transport endpoint is not connected : 30 Time(s)
> libsmb/clientgen.c:cli_receive_smb(112)  Receiving SMB: Server stopped
responding : 774 Time(s)
> nsswitch/idmap.c:idmap_alloc_init(679)  ERROR: Initialization failed for
alloc backend, deferred! : 2860 Time(s)
> param/loadparm.c:lp_do_parameter(3523)  Global parameter guest account
found in service section! : 2 Time(s)

Here is my config:
> [global]
> 	workgroup = MWG
> 	netbios name = MWG-SERVER
> 	server string = MWG-Samba
> 	interfaces = 192.168.1.0/24
> 	debug uid = Yes
> 	time server = Yes
> 	printcap name = cups
> 	add user script = /usr/sbin/useradd -m '%u'
> 	delete user script = /usr/sbin/userdel -r '%u'
> 	add group script = /usr/sbin/groupadd '%g'
> 	delete group script = /usr/sbin/groupdel '%g'
> 	add user to group script = /usr/sbin/gpasswd -a '%u' '%g'
> 	add machine script = /usr/sbin/useradd -s /bin/false -d /var/lib/nobody
'%u'
> 	logon script = stdlogon.bat
> 	logon path = 
> 	logon drive = q:
> 	logon home = 
> 	domain logons = Yes
> 	os level = 65
> 	preferred master = Yes
> 	domain master = Yes
> 	wins support = Yes
> 	path = /data/printspool
> 	admin users = "@Domain Admins"
> 	printer admin = @smbadmins
> 	hide dot files = No
> 	share modes = No
Currently the system seems to be working properly except for the errors. 
  What do I need to do to fix this?

Boaz