HELP!

I bought myself a KDL42W653a last week and, initially, was very impressed. The first night I popped on a DVD, fiddled with the settings and found one for 'motionflow' which made the display look super fluid. At the same time, I also changed a setting for audio delay (in ms) because the audio became slightly out of sync with the picture.

Since that night, however, both options have disappeared. The image played from the DVD player is now back to 'normal' and absolutely nothing I change can get the 'motionflow' setting back. I've noticed that a number of people on the net have asked why the motionflow setting is not included on this model (despite it being a Motionflow "00hz TV!) but trust me, IT WAS THERE! It made a wonderful difference to the quality of films and now I'm pretty annoyed that it has gone. Has an erroneous system update since the night I plugged in the TV perhaps removed the option?

If anyone could help me I'd be really grateful... including Sony officials.