I finally got my 254 in form HK and got it set up yesterday. My initial observations are that the PCM problems I had with my 247 seem to be fixed. The problem with the 247 constantly forgetting which surround mode is fixed. The 1080p sparkes are fixed...
So what new problems did I get in exchange? Well count me in for the HDMI issue when switching between SD and HD channels. I get the big green block on the right side as many have described.
I know a few mentioned Blu-Ray problems, I am having one odd issue with my Samsung BD-P1400. When the BD player turns on, I see the logo screen momentarily, then the 254 just passes white snow over HDMI to my projector. I cannot see or access any BD player menus until I actually start to play a BD disk. At that point it looks great, and I can go back and access the menu. Weird, huh? This never happened with the 247.
*SO FAR*, these are the only bugs I have encountered, but have not used it for an extensive period of time. If this remains the only problem for now, I can live with it, but they are annoying.