Same problem here :(
Received mine yesterday:
The supplied lan cable is not working. When I use that one I do not get a physical connection at all. I used another lan cable and then I get a physical connection, but no lan light and no connection possible to the interface using both methods. The WAN interface does show up.
The lan light does light when the device is booting so the light is not broken.
Connecting with windows 7
I did not test the juice, but by reading I fear that will be broken too.