For some reason I find this hard to believe. I was a Dish customer 9 years and had the 622 and 722's and never had a issue.Same surround sound setup the only thing that changed was Dish to Direct
Find me another thread that shows Dish was having audio drop out problems with HD broadcast.
With DISH this was a more minor issue. It was also fixed some time ago. This is amazing that it also affects the HR24-500. Just when you think the grass is greener...