Yeah, I suspect my G10 is doing the same ever so slightly. It'll do me fine until 4K plasmas/oled's (if they ever truly fix the blue issue) can be had for £1500 though in a few years, 2015 probably. My G10 still trounces every LCD I've seen in the flesh, although I'm sure more recent high end ones beat it.
I think more recent ones have the Pioneer Kuro tech in them, so they should be very good, although the reviews I read a couple of years back weren't brilliant. I've got an 'old' G10 and it's starting to grey.