The service tech came out today to see if a new lcd connection cable would solve our problem of vertical streaking. The set was right at 13 months old when this issue arose and, no, I did not get an extended warranty -- my bad.
The new cable did not fix the problem The set works ok on dramas, not too bad on sports and is unusable for games. We are shopping for a new set now and it won't be a Samsung and, yes, we will get an extended warranty.
The tech told us that we could appeal to customer service but that he had numerous other customers who bought Samsungs and had experienced bad panels shortly after warranty expiration and none of them got any help from Samsung customer service. He was a well of horror stories about these televisions and the company's customer service.
Be warned, Samsungs are unreliable as can be determined through a search of this and other Samsung LCD threads. Bottom line, Samsung is Junk!