I'm posting this here, because the main owner's thread has primarily become people interested in the TV, posting requests for information... or their feelings based on views in-store. That is needed, of course, but it also means that posts geared towards owners are quickly lost in the mayhem.
I wanted to summarize what seems to be the current issues with the TV, and how calibration has an effect to fix at least one of them.
1. 480i is not accepted over HDMI. Samsung has confirmed that this is intentional.
2. 480i has white bands/clouds on the left and right side when played over component connections. It is not very practical to try and calibrate to get rid of them, as you would have to make your set extremely dark to really get rid of them. This is a flaw that we have to live with for now, unless Samsung decides to make a fix.
3. There appears to be HDMI handshaking issues.
3a. This has widely been experienced with the PS3. People get signal dropouts, and the TV says searching for signal. Sometimes people have to power the TV off to restore. People are only experiencing this while playing games... NOT while watching Blu Ray movies.
3b. There is a rarer experience, in which the screen momentarily turns to all white static. Some people have seen this with the PS3. I have seen it playing the AVIA calibration disk on an Oppo 981. It seems to only last for a second or two, and then is restored.
4. Those white bands/clouds can appear over HDMI as well. However, these are much more minor, and can be calibrated out... especially by changing HDMI Black Level to LOW. The HDMI Black Level option only shows up over HDMI if you have the right kind of source that supports it. You only have to change it once, and then it applies to all HDMI ports going forward.
5. I have personally experienced the TV turning off momentarily and then turning back on a second later. I hear it "click" when it turns off. (LN-T4661F). I am not sure if I have a defective set, or if other people have had this problem as well. I have experienced it with a TIVO Series 3, and with the Oppo 981.
6. We are still trying to get the discrete IR code for HDMI2. Logitech has them for HDMI1 and HDMI3 already, but not HDMI2.
7. Most sets have almost no true mura/clouding/Sharp Banding issues. However, most do show the mura issues when viewing at an angle. The panels still seem much, much better with regards to mura than most other sets out there.