Plasma TV flecks…screen burn?

I own a 50" Samsung plasma screen TV that is about 6 months old. About a month ago, we started noticing pixels that are flashing green, red, or blue. These pixels flashes are only evident when the background on the television is black or dark colored. This pixel flashing only occurs in the bottom right-hand side of the television and the top portion and lower left hand quarters are fine. Is this considered screen burn and if so, what can we do to fix?

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