Too strange to be a coincidence. I have 3 STXL cameras at NMSkies that are exhibiting the same issue. One is 2+ years old recently returned from Bill Lynch, A second STXL returned from Bill Lynch that required a new sensor because of a trailing charge problem and yet a third STXL that I pulled from stock over the weekend that is brand new. All exhibit this problem. I called Bill Lynch and he asked me to send a report (and had no clue as to what was going on though he suggested it sounded like "software". Take a light frame with the camera covered (no light) and it makes normal dark frames. Take a bias or a dark in Maxim with the frame type set to bias or dark and the frames are totally saturated. A 1 minute light frame made by covering the scope looks like a 1 minute dark...I would expect that. Set the camera on dark frames or bias frames of ANY length and the result is a totally saturated frame. I get the same result in SkyX as well as Maxim. Going backwards to Maxim 5.24 gives me the same result. Second symptom. Bin 2 x 2 or 3 x 3 or 4 x 4 and still get the saturated frames but with bright horizontal lines 2/3 to 3/4 across the screen. Same for bias frames or dark frames. It is so unusual for 3 cameras of the same model to exhibit these same symptoms at the same time. Have changed power supplies, cables, computers....makes no difference. Bill Lynch said he had no ideas. Both cameras that he had recently serviced checked fine when he shipped them with CCDOPS. Have there been any recent firmware or driver changes that could have caused this. My techs have a habit of updating firmware and drivers when they install a new camera or one back from service. All 3 of these cameras report they are up to date on firmware and drivers. I have two very unhappy customers and I'm pretty unhappy a brand new camera from a sealed new box all exhibit this identical issue. I really need some help ! Mike Rice New Mexico Skies, Inc.