I was troubleshooting a separate Netflix issue earlier today and was connecting successfully from both a Live Plus and a Live Hub.
Neither have a history of connection issues.
Netflix is most likely to blame, since there hasn't been a firmware update for the Hub for a while; nothing has changed this end, so it's hard to point the finger at WD.
Also, Netflix develop the Service for the Live units, it's not coded by WD, so ultimately it'll be Netflix who has to fix this in any case.
It'll probably be working again tomorrow.
..aaaaaand it's working today.