Currently version 21 fully updated is installed (Windows Vista Home Premium, laptop) and a fresh installer for version 22 was just downloaded (N360-ESD-Def-22.5.2.15-EN.exe); and I have tried a forum search for my most recent postings... but this is taking so much long time. My question, and I am guessing the answer is "YES"; is can I install over-the-top? I am having no troubles with the currently installed version 21.7.0.11 of Norton 360. This seems like a good time to upgrade to version 22, but I am almost sure that I can install right on top of what I have. I can do this and expect no difficulties? Yes or No?