[Samba] Can join AD 2003 domain; can't list shares from other servers

[Mike Leone]

I set up an old laptop with Xubuntu 9.10. I configured Samba as to work 
with my Win2003 AD domain that has MS Services for Unix installed.

I can get a Kerberos ticket. I successfully added the laptop to the AD 
domain. wbinfo -a shows me all users, domain and local. wbinfo -g shows 
me all groups. wbinfo -a user%password returns successfully. "getent 
passwd"  works as expected - I see local users, and domain users.

"net ads info" works correctly, returning info.

LDAP server: 10.0.0.60
LDAP server name: dim-win2300.DaCrib.local
Realm: DACRIB.LOCAL
Bind Path: dc=DACRIB,dc=LOCAL
LDAP port: 389
Server time: Fri, 23 Apr 2010 13:12:53 EDT
KDC server: 10.0.0.60
Server time offset: 1

And yet:

$ smbclient -L workhorse
Enter turgon's password:
session setup failed: NT_STATUS_ACCESS_DENIED

I have no idea why it's failing; I'm not seeing anything in the samba or
winbind logs. (workhorse is Ubuntu 9.10, configured as a domain member 
server)

I can do the reverse; from "workhorse" I can see all the shares on the
laptop:

turgon at workhorse:~$ smbclient -L turgon-laptop
Enter turgon's password:
Domain=[DACRIB] OS=[Unix] Server=[Samba 3.4.0]

	Sharename       Type      Comment
	---------       ----      -------
	IPC$            IPC       IPC Service (turgon-laptop server (Samba
3.4.0, Domain: DACRIB, Server: turgon-laptop - NT1))
	print$          Disk      Printer Drivers
Domain=[DACRIB] OS=[Unix] Server=[Samba 3.4.0]

	Server               Comment
	---------            -------
	TURGON-LAPTOP        turgon-laptop server (Samba 3.4.0, Domain: , Ser

	Workgroup            Master
	---------            -------
	DACRIB

Hints as to where to go next? It must be something wrong on this 
specific laptop, since it works from my other server,
but I dunno where, since all the other tests work. Firewall is off, on
both machines.

===============================
smb.conf:

[global]
         workgroup = DACRIB
         realm = DACRIB.LOCAL
         server string = %h server (Samba %v, Domain: %D, Server: %L - R)
         security = ads
         map to guest = Bad User

         client use spnego = true
         client ntlmv2 auth = yes

         eventlog list = Application System Security SyslogLinux

# PAM AUTH
         encrypt passwords = yes
         obey pam restrictions = Yes
         pam password change = true
         password server = dim-win2300.DaCrib.local
         passwd program = /usr/bin/passwd %u
         passwd chat = *Enter\snew\s*\spassword:* %n\n 
*Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
         unix password sync = Yes

         log level = 3
         syslog = 0
         log file = /var/log/samba/log.%m
         max log size = 1000

         domain master = No
         local master = No
         os level = 2

         dns proxy = No
         usershare allow guests = Yes
         panic action = /usr/share/samba/panic-action %d

# WINBIND

         idmap config DACRIB: default = true
         idmap uid = 10000-20000
         idmap gid = 10000-20000
         idmap config DACRIB:schema_mode = rfc2307

         winbind enum users = Yes
         winbind enum groups = Yes
         winbind use default domain = Yes
         winbind nested groups = Yes
         winbind refresh tickets = true
         winbind nss info = rfc2307
         winbind separator = +

         template homedir = /home/%D/%u
         template shell = /bin/bash

;       invalid users = root
         create mask = 0700
         directory mask = 0775
         writable = Yes
         enable privileges = Yes
         restrict anonymous = 2

         wide links = no

         socket options = TCP_NODELAY