Sorry to hear that, especially I noticed you did some homework here before your purchase. Honestly, I still believe the current batches of plasmas are more resilient to burn-ins. The 2 I have have not such problems even though I didnt do the 'professional' burn-ins with specialised software. Just zooming in or run animax as much as i can initially. no over-night stuff.

yslysl has also such problems and i am not sure whether this is an exception rather than the rule. referring back to the dealer/Panasonic is one way to find out especially yr units are new.

good luck!