Have posted at length on this subject before - and it is LATE here - but share in the opinion that "all" the 2011 Pan plasmas will at least have some Unwanted Green Tint and/or Pink (Magenta) Tint - but also acknowledge that either of these CAN be very hard to see on some of the panels.
Content, panel settings, and individual sensitivity all play into the "visibility" of the glitches - my wife only "sees" the problems when I point them out to her, and even then she (mostly) is inclined to simply shrug & say "Not a big deal."
And, it does seem reasonable to say that "If I HAVE to GO LOOKING for it, then how much of a problem is it, really?"
Actual GREEN BLOBS are harder to tie down: these tend to be very visible against certain shades of gray - and the photo posted is a classic example of what they typically look like - but we've also had 2 60" ST30s that we've kept long enough for the BLOB to largely (but not entirely....) Fade Away.
Nevertheless, both of those panels retained a Green Tint that "substituted" itself for certain shades of gray. And, alas, the first displayed a horrible growing PINK tint. The second is still in house, with about 5 weeks remaining in return period, and Pink is now the greater concern, although Green still comes "shining through" in some scenes. (Smoke, water mist, clouds, institutional grays, yellows, or beige, B&W movies - esp zoomed to full screen, as PINK tends to show first around the edges of the panel.)
Am hoping to reach the 1000 hour mark before end of April - around 500 now - to see whether Pink will also dissipate with aging. If not - or if Green still shines through during XMen 2, Robin Hood, HOUSE, My Favorite Wife, Hysteria & So Forth..., may well end up shopping for a LG plasma....