I couldn't get it to work on my PC, but my iPad is working just fine.....granted it's and app and not a browser though.
Unfortunately, online viewers that shelled out the significant cash for the Sunday Ticket service found they were completely unable to use it over the weekend, and users took to the DirecTV forums to give DirecTV a piece of their mind(s). After complaints piled up with no satisfactory response from DirecTV, the company took it upon themselves to delete the entire thread in question.