Buenas noticias, mirad lo que acaban de postear en el hilo de los negros flotantes de avs:

Guys I have some good news.

So having given up on talking to Panasonic's reps I asked them who I can get out to my house locally. They said consumer electronics or something like that here in PA. So I called them and got an appointment a couple of days ago for today. This guy just left literally a couple of minutes ago. At first he had trouble seeing the issue but I put on a specific scene in Kill Bill Vol 2 where the brightness/gamma goes up and down about 10 times in one scene. He saw it immediately and called his manager. The manager told him that there is definitely an issue with this, especially in THX mode, and they had the same claim at least twice in this area. Apparently he had already contacted the engineers and they said a test firmware update should be ready within 2 weeks.

The guy said that as soon as they get the update and test it, he would bring an SD card over to my house to apply it. I asked if he knows when the firmware update would actually be made official, he said he doesn't know but probably no later than a few days after they have a copy. He said to keep it in custom mode for now with the gamma increased if it's too annoying and that he would definitely be back with a fix.

My advice to you guys is forget the Panasonic reps, ask them for a local company that they deal with and have someone come out to your house. Have a scene of the movie ready when the floating blacks happen so that the guy sees it and if he still insists that it's a feature have him call the manager and confirm. The good news is that the guy assured me it's not a hardware issue and that a firmware fix is on the way. My guess is that it should go public no later than a month from now.

I'll keep you guys updated on how it goes.