Hi all I have problems with my Epson 4900. All prints come out posterized and it really looks like a double conversion occurred. I printed excellent prints untila a couple of weeks ago with standard profiles and custom ones made by me. At a certain point it started to print very posterized prints so I tried to avoid it changing the custom profile (i print from Lr4 under Mac OSX 10.7.4) and switching to factory profile for the Premium Luster: same posterization. I upgrade the driver with the latest one (8.66) and I tried with it: same story. I tried with a workaround for not managing color and see what happen...I printed from Preview and from Adobe Color Printer utility just to see what's going on: same posterization even with no color management. I tried from Mountain Lion and driver 8.66: same posterization I don't know what else to do...any idea? Giuseppe