I've just bought a Toshiba 36ZP46 to replace the 5-year old 28" set we had. The first one that was delivered had an annoying buzz in it. I've seen several posts on here mentioning that large screen 100Hz sets are prone to buzzing. Spoke to the company it was bought from, and they said leave it for a week to run in. Spoke to Toshiba for a second opinion, and explained that the buzz was loud enough to be audible from the settee when watching at normal volume levels, and they said it was definitley a fault and to return it. Anyway, we got the TV replaced, and the new one seems to be better: you can still hear a buzz if you place your ear next to the casing, but it is not audible during normal circumstances. So, question 1, what's the story with buzzing TVs? Now, question 2, with the new larger screen, compression artefacts/blocking from digital TV (we have ntl digital cable) are more obvious. I've got noise reduction turned on, and sharpness turned right down, but still my wife says that the picture is worse than the old 28" set. Is there anything else I can do? (The contrast is set to 100%, but I can still see the different white boxes in the THX Optimizer.) If I got Sky, do they broadcast with higher bitrates and a less blocky picture?