The older your PC is, the more junked-up its Registry becomes. Badly written programs (and there are plenty of those around) don't bother to clean the Registry when you uninstall them, and some programs add unnecessary junk to the Registry. The more junked-up your Registry, the more likely it is to crash or to slow down your PC. Wise Registry Cleaner Professional is one of the safest Registry cleaning tools available in the market today. Its scanning engine is thorough, safe and fast. Wise Registry Cleaner Professional was designed to improve your PC performance by system optimization