I had tested my projector the other week and it was good to go. Now I mounted it from the ceiling and was running it and ran into two problems. At this focal length, maybe 6" in front of the test range, there is a very slight greenish dust blob. I hadn't even noticed it, but my kid did. I'll have to watch some dark/space scenes to see if it's noticeable in the real world. The other - larger - issue is that a few times I've gotten a blue screen in the middle of watching HDTV that says "Auto Iris Error - Shut down projector and call Epson service." This happened over the weekend, so I didn't call them yet, planning on doing it today. Is this a known/common issue? Any experience/advice you all can share with me? May have to send it back if it's a problem, I guess.