I think my p50g10 may have finally made the leap to the elevated black levels. I've had the set for about 3 months and I noticed the change yesterday. I can only tell when the room is black and there is a blank screen with no signal coming through. I can't tell when there is any kind of programming on.
As Orta, I think, said, there now seems to be a 3-stage black-level showcase when the set comes on. First: bright grey. Then: very dark (for just a split second) and then: slightly grey, which is where it settles. A few days ago this was just a two-stage process.
I think I can live with it, if this is indeed the final MLL. I sure would like to hear the reason, though, and I would especially like to hear about a fix!