722K is the problem for me..
Audio dropouts via HDMI to my Onkyo receiver hooked to my projector.. But no such drop outs occur on my 32in LCD which is hooked up via component off the same receiver. Listening to both at the same time, the Onkyo drops audio often while the LCD never misses a word.. In my opinion the 722k is hosed when connected to Dolby Digital.
Mark,
Have you been reading above? It's not the 722k but known issues with certain receivers (ONKYO being the one most mentioned) having HDMI handshake issues. That's why your 32 LCD works and your projector will work just fine if you use the HDMI to send your Video to the projector but use the TOSLINK fiber connection to send the audio to the receiver.
People that have this exactly problem all report that when they bypass the Onkyo (or upgrade) receiver they problem goes away.
So why are you saying the 722k is hosed?