Just had the weirdest thing happen, after using Registry Mechanic and cleaning all bad entries, I logged off. When I logged back in, a warning appeared telling me my Windows XP was not authenic and I may have a ****** copy?! This is not the case it came preinstalled on my system when I bought it. I rolled back to the previous system restore point and touch wood, everything seems to be back to normal. Anyone have any explanations? Nez.