I am trying to get word out to those seeking an answer and apparently my previous posts are to harsh on Slingmedia so they delete them: So here is a toned down version just so others like me know the problem does exist and its not their hardware:
As an app develepor for iOS - I do know what the issue is and a Slingmedia Rep (Dana) has also confirmed this is correct and they are working on an app update ASAP
The problem is the HLS Protocal was updated in iOS 6 by Apple and up to recently not noticed. So it will take a little bit of time to rewrite around the new protocal to allow full streaming over a cellular connection.
That's the problem and reassurance has been given there will be a fix soon by a Slingmedia Rep (Dana)