I have had an IBM laptop at home for a few years and its performance has deteriorated over the years. I haven’t installed much new software save antivirus, adware and spyware tools. Other than that I have upgraded the OS and kept up to date with patches, etc. Anyway the performance makes the computer virtually unusable and I have spent hours, defragging and doing everything else I can think of. Often the hard disk churns for no reason. Eventually I decided to try Registry Mechanic and you know what? This thing worked. The computer is much more speedy. It is not a rocketship but it is more usable anyway. It kept me from throwing the IBM into a wall which I guess makes it worth the money I spent on it.