While not exactly the same, I just saw similar issues reported in another thread. The solution was To watch TV, please use http://watch.slingbox.com
My problem with this is I want this solely on my LAN and off the grid - not for the internet. Sling has essentially said if you want to use their product then an internet account would be required for the network for which the Sling is attached. Perhaps they are now collecting cookies and viewing statistics for sale to broadcast networks and advertisers?