The first may be a preference setting that doesn't necessarily appeal to you. I'm not sure by "foggy" if you mean the picture is too dark, or if it's blurry. But the settings on some forums are just that - what some users think is best.
As for the audio dropping out, it's hard to pinpoint the exact cause. It could be anything from the television itself to an HDMI handshake issue or the cable box's level of sensitivity when connected to the cable box. If you're concerned, I'd see if you could have service come check out both the picture quality and the audio issue - perhaps resolve both of those issues at the same time, if they are related to the television.
Keep me posted!
This is about the open box 40A630 I asked about in terms of warranty a couple of weeks ago. Two things about it have me puzzled. First, if the AVS calibration forum for 630 models is any indication, a lot of people are using Movie mode for all around viewing, including cable/satellite HDTV. The strange thing with this set is that Movie mode presents a foggy image, no matter what other setting adjustments I make, and I've tried quite a few. Standard mode is required for good viewing with this one. The second thing is that every so often the sound cuts out during programs for 1-3 seconds. This didn't happen with previous HDTVs and the same Pace cable box. I'm not sure what to make of these, tho I can't help but wonder if they aren't related to why this set was previously returned.
Do these sound like anomalies?