When you select an interface and hit the "Enable" button, nothing happens. If you select an interface and use the "traffic lights" to enable it, it works.
Oddly enough, it isn't reproducable if you click the left "Network" menu then "DHCP" in the right pane. However, if I expand the "Networking" submenu then pick "DHCP", select a network from the drop down thaqt is OFF then click the "Enable" button, it fails.
