samba - Dec 2010 - Domain Member Server not showing domain users/groups and not honoring domain user accounts

I've got a domain member server configured as such:

Load smb config files from /etc/samba/smb.conf
Processing section "[videos]"
Processing section "[music]"
Loaded services file OK.
Server role: ROLE_DOMAIN_MEMBER
[global]
         workgroup = TEMPEST
         server string = Media Server (%h) (Livingroom Television)
         security = DOMAIN
         map to guest = Bad User
         syslog = 0
         log file = /var/log/samba/log.%m
         max log size = 1000
         dns proxy = No
         wins server = density.aarcane.info
         usershare allow guests = Yes
         panic action = /usr/share/samba/panic-action %d

[videos]
         comment = Rebirth local Videos
         path = /media/local/videos
         write list = @rebirth
         force group = videos
         create mask = 0664
         force create mode = 0664
         directory mask = 0775
         force directory mode = 0775

[music]
         comment = Rebirth local Music
         path = /media/local/music
         write list = @rebirth
         force group = music
         create mask = 0664
         force create mode = 0664
         directory mask = 0775
         force directory mode = 0775

The server is not honoring domain accounts (the PDC honors domain 
accounts and shows owners/groups as domain users without issue), but 
this one is saying "Unknown username or bad password" when trying to 
browse to it, and when you specify your domain username and password 
manually in the prompt, it shows files and groups as REBIRTH/username or 
UNIX-GROUP/groupname instead of as domain users and groups.

below I've stopped the server, cleared out the old log files, and 
restarted smbd (and nmbd) and double-clicked on rebirth in the windows 7 
network pane.

ikari (10.0.0.241) is the client I'm using.

aarcane at rebirth:/var/log/samba$ ls
cores  log.10.0.0.241  log.ikari  log.nmbd  log.smbd
aarcane at rebirth:/var/log/samba$ cat log.10.0.0.241
aarcane at rebirth:/var/log/samba$ cat log.ikari
[2010/12/29 16:04:30.647903,  0] lib/util_sock.c:474(read_fd_with_timeout)
[2010/12/29 16:04:30.648046,  0] 
lib/util_sock.c:1432(get_peer_addr_internal)
   getpeername failed. Error was Transport endpoint is not connected
   read_fd_with_timeout: client 0.0.0.0 read error = Connection reset by 
peer.
aarcane at rebirth:/var/log/samba$ cat log.nmbd
[2010/12/29 16:03:44,  0] nmbd/nmbd.c:857(main)
   nmbd version 3.5.4 started.
   Copyright Andrew Tridgell and the Samba Team 1992-2010
aarcane at rebirth:/var/log/samba$ cat log.smbd
[2010/12/29 16:03:41,  0] smbd/server.c:1123(main)
   smbd version 3.5.4 started.
   Copyright Andrew Tridgell and the Samba Team 1992-2010
[2010/12/29 16:03:41.923307,  0] printing/print_cups.c:108(cups_connect)
   Unable to connect to CUPS server localhost:631 - Connection refused
[2010/12/29 16:03:41.928781,  0] printing/print_cups.c:108(cups_connect)
   Unable to connect to CUPS server localhost:631 - Connection refused
[2010/12/29 16:03:41.929413,  0] smbd/server.c:1169(main)
   standard input is not a socket, assuming -D option
aarcane at rebirth:/var/log/samba$