I noticed the same thing. It seems to vary by channel. Scooby-Doo on HBO was terrible (the movie and the macroblocking). Austin Powers was pretty free of it.
Is anyone still having frequent audio dropouts? I have the new software, but am still experiencing drops. On some channels it will drop out as much as three to four times a minute.
I live in Clemson, and just had my install on Saturday. Everything went fine, with a competent installer. Picture quality is excellent, and I receive all the OTA that I expected to (two stations). I'm quite happy