you guys.... i did some more extensive research. as it turns out, our european cousins are having the same issue with their european version, also known as ES6300. read this thread starting from the bottom of Page 7 http://www.avforums.com/forums/lcd-led-lcd-tvs/1626699-samsung-es6300-7.html
you'll notice that on page 9 someone changed out the Tcon board (also known as Timing Control Board), and he says the ghosting problem is gone. so now i am not sure whether it's the pixel response or some kind of module, but what we can all agree on is, there is a problem.
but here's the kicker.... on that thread someone also mentioned that in 3D mode, the problem is none existence. so I came home and tried switch out of the calibrated movie mode and back into standard mode and tried to match the settings of the movie mode to as close i can get so that it's visually indistinguishable as possible. and guess what... the ghosting has gone down tremendously. i mean it's not COMPLETELY gone, but at this it has improved so much to a point that i am no longer thinking about returning the set, because it is almost undicernable now. the only time you'll still notice is during an extreme close up in a dark scene where you have an actor's face taking up half of the screen and the actor turns the face fast. but 99% of the time i can now watch my movies without having to notice those green ghosting effects anymore. i know it's not perfect, but i highly suggest you guys to give the below setting a try to see for yourself.
in order to make the Standard mode to match the calibrated movie mode, i had to make some slight changes. mainly due to the fact that Standard mode doesn't have 10 point white balance option.
btw, i can attest to the previous user that the Standard mode DOES have some kind of hidden effect applied to it that makes the picture more contrasty compare to the movie mode. even with all the settings matched, the Standard mode picture will still look more contrasty and BRIGHTER than movie mode at the same setting. but here're the settings below you'll need to make in order to get the picture look as close to calibrated Movie mode as close as possible. mind you i work in the motion picture industry doing visual effects, so i have a very keen eye on spotting colors.
Picture Mode: Standard
Sharpness: 20 (this can be any value you like, won't affect color)
Color: 40 (this must be 40, or something VERY close to this value in order to compensate for the slightly overblown/over saturated picture in standard mode)
Tint: 50 (default)
Dynamic Contrast: Off (standard mode's dynamic contrast off setting will actually give you the same level of contrast as movie mode setting at LOW)
Black Tone: Off (i highly recommend setting this value to OFF on all settings, as setting black tone on anything but off will only crush the shadows, trust me)
Flesh Tone: 0
Colro Space: Auto
White Balance: leave it at default (if you change any of the values here WITHOUT fine tuning the 10 point white balance your color will be wayy off, and since Standard mode does not allow 10 point adjustment you need to NOT touch any of this setting. this is why we changed the COLOR value in the basic picture menu to 40 in order to compensate, so leave this setting unchanged.)
Color Tone Warm2
the rest of the settings that i did not mention you should leave them off. All the noise filter are up to you if you want them, but those won't affect any color.
give the above settings a try if you have the 60/65 inch model like i do and have the green ghosting effect. pop back in a movie that you know will have the most amount of ghosting effect, for example Mission Impossible 4 the rail way scene after Tom Cuise escapes from the river and walking to the train, this is my benchmark scene for testing.
one thing i do have to note is, since you're now forced to use standard mode, you're forced to use CE Dimming. so that's the only down side, but the up side is.. CE Dimming masks all the clouding issue that you might have.
let me know if you have any questions. i am still hoping that Samsung can come out with a firmware update to address this, because if the settings can improve the problem, there's remedy for it. imagine if the TV had looked like this i would've never noticed any of the ghosting and just carry on with my life. so if them come out with a firmware that minimize the majority of the problem, i am willing to bet hardly anyone will notice the problem opening their box of new TV.