It is still an issue, to varying extents. The people that say otherwise are generally people that want to sell TV's. You might not get it now, when the panel is new, but that's not guarantee you won't get it later, when the phosphor ages, especially if you watch the same channel/play the same game often during it's lifespan.
Even if you don't get any burn, retention is still a problem. If you play a game for a while, that has static items on screen, then change over to the TV you'll often see feint outlines of your game for a while. Especially if you watch something, such as football or golf, that has lots of areas of the same colour. It annoys the hell out of me.
Plasma's are better with motion though, and I'd say that screen response times on LCD's are a little misleading. They're not really the issue. Even with the lowest response rate panel, you'll still get motion problems due to the kinda "afterglow" effect.
Plasma often seems to be a more natural image too, partly because our eyes are conditioned to CRT's. Plasma is more CRT-like because it's not quite as razor sharp as LCD. Also, because of this, it often seems more flattering to SD footage.
But then, LCD is far more suited to PC use, because of this sharpness. So it's horses for courses !
Panasonic said that ? Did they guarantee it ? If so, presumably you can return it under warranty if it occurs ?they told me to run it on eco for 200 hours and thats it (panasonic)
If so, that's the first example I've heard of, of a manufacturer giving any sort of firm reassurance about screen burn. The fact that they never previously have (to my knowledge) is a pretty big indicator that it IS still an issue.
To you, maybe. But someone with an equivalent LCD might prefer it to your plasma. Personal preference and all that ?Yes, but my plasma still is better than equiv lcd