Smart UAC is a replacement for the Windows Vista UAC that claims to be, well, smarter than the standard UAC that comes with Vista. While it's no stretch to imagine that UAC could be better, Smart UAC itself is being offered by a company called Security Stronghold. While their name makes them sound good and their websites are all very professional, these guys have released several programs in the past that have been classified by Symantec as being security risks for malware, adware, and spyware. Do you really want software from a company like this to be installed as a key component to security of your computer? I know I don't! Do yourself a favor and stay away from Smart UAC.