I am aware that dust is recognised as a problem for LCD projectors. I am particularly interested in the Sony VW10HT - is dust a big problem with this machine? How does the problem manifest itself in terms of performance? Does it make a difference if the projector is ceiling mounted (and therefore upside down)? How can you minimise/prevent the problem? What do you do if it does get dusty? Any input greatly appreciated. ------------------ "Build it and they will come"