samba - Sep 2004 - Printer name includes IP address instead of server name

We made some changes to one of our Samba servers that until recently has
been primarily a print server.  We added PDC with LDAP authentication to it.
Somewhere along the way, a different kind of behavior appeared.  When users
add a printer to their windows machines it now appears as PrinterName on
xxx.xxx.xxx.xxx instead of PrinterName on ServerName.  Has anyone seen this
behavior before?  Any ideas on how I might fix it?

Samba version 3.0.7 running on Fedora Core 1

Config info follows:

[global]
netbios name = TITAN
dos charset = 850
unix charset = ISO8859-1
workgroup = AGNET
server string = ASGC Domain Controller/Print Server
map to guest = Bad User
obey pam restrictions = Yes
passdb backend = ldapsam:ldap://<LDAP Server Name>
username map = /etc/samba/smbusers
syslog = 0
log file = /var/log/samba/%m.log
max log size = 100000
name resolve order = wins lmhosts bcast
time server = Yes
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
add user script = /usr/local/sbin/smbldap-useradd -m "%u"
add group script = /usr/local/sbin/smbldap-groupadd -p "%g"
add user to group script = /usr/local/sbin/smbldap-groupmod -m "%u"
"%g"
delete user from group script = /usr/local/sbin/smbldap-groupmod -x
"%u"
"%g"
set primary group script = /usr/local/sbin/smbldap-usermod -g "%g"
"%u"
add machine script = /usr/local/sbin/smbldap-useradd -w "%u"
logon script = startup.bat
logon path logon drive = c:
logon home domain logons = Yes
os level = 65
preferred master = Yes
domain master = Yes
wins support = Yes
ldap admin dn = <LDAP DN Value>
ldap delete dn = Yes
ldap filter = (&(uid=%u)(objectclass=posixAccount))
ldap group suffix = ou=Groups
ldap idmap suffix = ou=Idmap
ldap machine suffix = ou=Computers
ldap passwd sync = Yes
ldap suffix = o=AlphaGraphics
ldap ssl = start tls
ldap user suffix = ou=agcorp
cups options = raw

[printers]
comment = All Printers
path = /var/spool/samba
printer admin = @admins, root
guest ok = Yes
printable = Yes
browseable = No

[print$]
comment = Printer Driver Download Area
path = /var/samba/drivers
write list = @admins
force group = admins
force create mode = 0664
force directory mode = 0775
guest ok = Yes
browseable = No