Weird, since my 722 was "Turbo Charged" the HDMI audio cuts out after about 3 seconds. Then if I change my inputs on the TV and then back to my SAT receiver it comes back and then goes out after about 3 seconds. What's up with that? Before the "Turbo Charging" it worked fine.
The really odd thing is that only my 722 HD channels were doing this. My standard def channels tuned in via the 722 didn't have the audio cutting out.