I have an ADA Cinema Reference II and have run into a problem recently. When I switch from my DirecTV box back to my HTPC, sometimes the sound doesn't kick back in. I'm just using the onboard optical from a Gigabyte GA-MA790GP. I've had the system for 8 months now and this is a pretty recent occurence. It doesn't happen every time, but it happens enough that it pisses me off. I have to power cycle the ADA quite a few times before I get sound from the HTPC. This only happens when switching to the HTPC, so I'm wondering if there has been some sort of update from Microsoft that may have caused this or if anyone else has seen or heard of anything like this. Thanks for any help.