I've had my domino 30 for about ten months now, and it has clocked up 290 hours. I have it hooked up to VGA for PC work/presentations and feed it with component from my Denon 2800Mk2. When watching movies lately I have started to notice that sometimes during scenes the picture drops in brightness for a while, then later (perhaps 2 - 10 minutes) the brightness picks up. The brightness change is quite subtle but distracts me when I notice it happen. I have checked the installation and all cables are ok, the DVD / player do not produce the same effect when played on my plasma, and the projector (ceiling hung - upside down on appropriate support) has 9.5cm clearance between the vent holes and the ceiling and I think should be cooling ok... The DVD is sending in PAL interlaced (15Khz) because I found the Denon's progressive scan too soft in comparison to the domino's farouja deinterlacer. I've also double checked that brightness, contrast and colour are setup reasonably using digital video essentials (PAL). Is there something wrong with the projector or is this something that happens "normally" anyway and I've just not noticed it before ?