This is a native120hz panel that uses "scanning backlight" tech to achieve 240hz.. It doesn't matter what signal you feed it, it will still output a 240hz rendering. The 60hz you see in the top right info bar is simply the frequency/frame rate from your NTSC broadcast from your cable box/DVR or over the air signal. IN England it would say 50hz. All that aside, pay no attention to the top info bar if this has you worried. If you play a Blu Ray, it will say 1080p24 (assuming you have your Blu Ray sending your TV 1080p/24) This is really nothing you need to concern yourself with. The info bar ONLY displays the signal you are feeding the TV and NOT what the TV is putting out. The TV will ALWAYS put out a 1080p signal at either 60hz, 50hz or 24fps depending on your source. The 240hz is the screens REFRESH RATE and has nothing to do with the input or output signal. TO understand this further you can find useful info on both Wikipedia and the AVS forum among other places.
Do not worry, this TV IS 240hz (120hz with scanning back light doubling what you see) Cheers! Marty G