As I said in my twitter, I hate wizard apps… if you need configure your network in Ubuntu, try this:

Ethernet
sudo gedit /etc/network/interfaces

iface eth0 inet static
address 192.168.0.2
netmask 255.255.255.0
gateway 192.168.0.1

DNS
sudo gedit /etc/resolv.conf

nameserver 200.200.1.1
nameserver 200.200.1.2

Restart networking
sudo /etc/init.d/networking restart

see u…