My Dell 1210s DLP hardly stays on for five minutes before shutting down indicating that the lamp has overheated. A dedicated external fan does not seem to help matters. There are also white spots that started as insignficant speckles on the top right hand corner. No it has spread to almost the entire screen, sparing only the lower left part. The images can still be seen but the spots makes the skin crawl. As it is being used, new white spots are seen to appear.