Ive had my 42HDS52 for a about two months now and I love it. The thing is, lately, Ive noticed that in scenes that are pretty dark, Im getting a bit of a flickering. Its hard to describe. Basically, the darkest parts of the screen seem to flicker from time to time- a few shades lighter then back to normal. Has anybody had this problem? Is this normal? It's my first plasma so I just dont know. Thanks!