Just bought a 55" 6000SF last night at best buy for $1097, light years ahead of my old 56 samsung dlp from 2008!!
Everything looks pretty sweet after calibration based on posts in this thread, my corner flashlighting isn't bad as others I have seen, especially after loosening the edges a little.
However I did notice a strange "other" defect, if that's what it is.
I have read that PC should be in input 1, I have mine into input 2 ( but I have tried 3 and 4 as well with the same result) So I don't know if its the computer, or if it just needs to be input 1. Have not tried normal rgb pc input yet, but really didn't want to use that type of connection.
I have tried both a micro hdmi straight from my gtx560 -> the tv, and a dvi -> hdmi cable into the tv as well. Both produce this result.... It is only during a full black scene that it is obvious, but after staring at it long enough, you definitely see it in color scenes as well.
I will try to switch it to input 1 tonight, but input 1 coming from my receiver has no such issue from ps3, 360, or verizon fios...