You'll all be happy to know that the problem with the HDMI audio is fixed in .901. I had tested and found that I could get audio on some TVs at Best Buy but not others and I could not get it at home with my Sony TV and Integra receiver. Today I installed the 901 update because I couldn't stand the data drops anymore. I just got home and figured I would test the HDMI and ... TADA!! , it works like a champ.
So, either wait for the OTA or install the update that got pushed accidentally to some folks.