Hi Peter, Why are you re-profiling so often? Most modern displays are extremely stable, to the extent that re-reprofiling is likely to introduce more variation than you would notice by leaving the original profile in place and letting the monitors age naturally. The only change due to age I typically observe is a slight reduction in brightness, which is unimportant unless you regularly compare two or more monitors at the same time, side-by-side. BTW, LTNS. How you doing? Don ........................................................ Don Hutcheson HutchColor, LLC Washington, NJ 07882, USA office: (908) 689 7403 cell: (908) 500 0341 ........................................................