error after upgrading to 2.2.2 - "not authorized to log in from this station"

[Terry Davis]

This is quite a common error according to newsgroups but I have not seen 
any ideas as to what causes it.
Everything was fine on 2.0.10.  Granted, big update but everything 
appears normal.

Here is my exact smb.conf file:

[global]
        server string = Samba Fileserver
        dns proxy = yes
        security = user
        workgroup = birddog
        time server = yes
        socket options = TCP_NODELAY
        log level = 1
        log file = /var/log/samba/%m-smb.log
        wins support = yes
        domain master = yes
        preferred master = yes
        local master = yes
        os level = 65
        domain logons = yes
        logon script = %U.bat

[netlogon]
        comment = Network Logon Service
        path = /etc/samba/logon
        guest ok = no
        public = no
        browsable = no
        writable = no

[homes]
        browsable = no
        writable = yes
        hide dot files = yes
        comment = Home Directories

[public]
       path = /home/public
       force group = public
       writable = yes
       hide dot files = yes
       force directory mode = 775
       comment = Public Files
       create mode = 775
       force create mode = 775
       directory mode = 775

[financial]
        path = /home/financial
        writable = yes
        browseable = no
        force directory mode = 770
        create mode = 770
        force create mode = 770
        directory mode = 770
        force group = financial
        valid users = @financial
        comment = Financial Files
        force user = financial

[mp3]
        path = /home/rufus/mp3
        browsable = no
        force group = rufus
        writable = yes
        force directory mode = 770
        create mode = 770
        force create mode = 770
        directory mode = 770

[home]
        path = /home
        writable = yes
        browseable = no
        valid users = @daimon
        comment = get out



Thank you all for your help!
Terry