I've just bought the Tosh 42WH18B and so far I've been been largely disappointed with the 100Hz scanning and I was wondering if anyone else had a similar problem. Basically if I switch the set to 100Hz, I get a really nasty flicker whereas in 'Natural' mode it seems fine. Does anyone know why? I had a 36" Sharp CRT previously and the 100Hz scanning on that set was fantastic so why the difference with the Tosh? Also, does anyone know how to turn the contrast down for the service menu on the Tosh? - I currently have to wear sunglasses to change any settings. Cheers.