I have acronis also (Acronis is an imaging tool. I do a clean install, install all patches, drivers and any programs I KNOW I will be using, then run acronis and make an image). I also do alot of software installs, uninstalls, tests, etc on my laptop. My laptop probably gets reimaged every 6 months or so. My desktop sitting in the office, however is running on the same install (no reimages) for the past 3 years. The desktop is really only used for web-browsing and stuff by my wife. Acronis saves me hours (reimaging takes....5-10 minutes)