I have decided to buy myself a projector. After weeks of reading about the Optoma HD70 I have decided that I am going to go for this one as I have seen good reviews for it and as I am on a tight budget it seems like an ideal price as i wouldnt be able to go any higher in price. I have a couple of questions though which I hope you wont mind me asking as I have no clue about these things. I read a post by one guy saying that he had been playing his ps3 for around 4 hours or so and his projector cut off because it over heated. I understand that the bulbs in these things get really hot, however I would like to know is it going to do the projector any harm being on for this length of time? Say I wanted to watch a movie that was near the 4 hour mark, would I have to switch it off half way through and leave it for a few hours to cool down before I watch the rest of the movie or would it be ok to leave it on for this length of time? As its going to be my first projector I am obviously going to be slightly obsessed with it for the first few days. Say I wanted to watch a few movies in the first day (which I no doubt will) will this be harmful to the projector? or is it ok to turn it off for a length of time after watching a movie and then put it back on again after about an hour? What I think im trying to say is how long are you supposed to let the thing cool down before it is safe enough to turn it back on? If the thing does end up shutting down through over heating is it going to do it any harm? Sorry about this post. As I said I have no idea about these things but I am really looking forward to getting this and just want to be on the safe side in case I end up melting it on the first day. I apologise if this has been asked many times before.