Sorry but I have also returned mine, sound cuts out all the time, screen flickers, def. a faulty unit. I have read some great reviews on this but also some very bad ones, a bit mixed, hope your set is okay.
It's outstanding for PC / HTPC use. HD sources look great on it too. SD performance is pretty average though. Plus in a darkened room the black levels are pretty poor. I was watching "Alien" on DVD last night in the dark and at times the dark scenes were so grey that it was distracting me. It's served me well over the past 9 months, but if I was to buy a TV now i'd definately look for something with better SD quality and deeper blacks.
In the new year i'll be replacing it with a 40W2000, I'm hoping black levels will be a lot better!