Post the [General] section of your smb.conf file and the section for your share on the Ubuntu machine.
Also post the permissions of the directory being shared: eg: ls -ld /srv/samba/share
If you use "Security = User", and use the smbpasswd file, then make sure to add users using the "smbpasswd" program. Another thing to check is that the firewall on either machine isn't blocking access and that the smb daemon is running.
Last edited by jschiwal; 08-02-2009 at 05:04 AM.