samba - Dec 2002 - Validation problem with NAUTILUS 2.0.6

Hi,

    After instalation off RH 8.0 and patched width the latest updates 
(samba 2.2.7-2) I configured samba as shown:

[global]
    workgroup = MYWORKGROUP
    netbios name = MYBOX
    security = domain
    password server = MY_NT_PDC
    encrypt passwords = Yes
    obey pam restrictions = Yes
    pam password change = Yes
    passwd program = /usr/bin/passwd %u
    passwd chat = *New*password* %n\n *Retype*new*password* %n\n 
*passwd:*all*authentication*tokens*updated*successfully*
    unix password sync = Yes
    log file = /var/log/samba/%m.log
    max log size = 0
    socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
    dns proxy = No
    printing = lprng
    character set = ISO8859-1
    announce as = NT Server

[homes]
    comment = Home Directories
    valid users = %S
    read only = No
    create mask = 0664
    directory mask = 0775
    browseable = No

[printers]
    comment = All Printers
    path = /var/spool/samba
    printable = Yes
    browseable = No

[public]
    path = /tmp
    read only = No
    guest ok = Yes


    Then i added my machine to the nt domain.

    In any windows machine i can browse my linux running samba and 
access shares.

    With smbclient i can connect to shares on windows machines and 
process the DIR command.
    But width the Nautilus i get the error "Couldn't display 
'smb://machine/share', because acces was denied"

Can anyone help me with this one ?

Thanks in advance

Jorge Pereira