Ahhh, yes! Crappy model numbers at Samsung though. I just checked with my DataColor and I get the same message, when I start the calibration process. As long as you didn't change the contrast of your monitor, that isn't something to worry about. It's simply a reminder, that you should let the spider do the work. Contrast is one of the parameters that get changes with the calibration when it comes to the grayscale. There is some documentation on the DataColor website, that explains how it works.