I think all plasmas have a slight sparkle to them. Some people call it dithering, but that would seem to indicate it is on purpose to increase color depth. I think that it's just a slight fluctuation in the number of electrons being excited from the plasma one instance to the next.
Can you see it from your seating position? I only notice it when I'm warming my nose right on the panel.
Yeah, my seat is a mere 8 feet away and I can see it on still frames or relatively static scenes... but only because I know its there. I've asked friends if they can see it and I universally get, "Hey, you're right! I didn't notice that!"
I'll try borrowing a power conditioner and see if it helps. If not, its not a big deal.
Thanks for the feedback everyone!
snazzed
