I just installed system-config-samba and add my Ubuntu 12.04 to windows workgroup,but I got error “Unable to mount location Failed to retrieve share list from server” when I try to browse workgroup from Ubuntu.
There is only 2 computers in my workgroup ,another is a Windows 7 computer,and I ever can connected to Windows’s shares with IP address.
So I run below command in a terminal to add the windows’s computer name and IP address to /etc/hosts
sudo gedit /etc/hosts
Then I can browse my workgroup from Nautilus now,hope this can help you.