Oops, I posted this in the wrong thread! Sorry all, this was meant to go in the brightness pops thread. Didn't realize we all had so many issues with Samsung.
I'm on my 2nd 64D8000 and both sets have the brightness/contrast issues. My 1st set was a real lemon. On top of the brightness issues it also buzzed really loud, had dents in the bezel, conponent didn't work and didn't have a deep black anywhere which really made the brightness issue noticable.
I'm going to contact Samsung again and try and speak with someone in Triage to see what they say about the issue. Really disappointed, I don't think I can live with this set. If they don't tell me anything usefull I'm going to ask for a refund and buy a Panasonic.
My 2 tv's had build dates are Aug and Sept 2011. The Aug had lots of issues.