Have you 64 bit Win 8 ? If you do , the free version of Revo Uninstaller will not work , as it only supports 32 bit Windows . The paid version of Revo does support 64 bit Windows . To my recollection , AVG is still a system hog . Avast & Avira are consistantly the best free antivirus solutions . FortiClient is also another good antivirus . Unless things have drastically changed , Microsoft Security Essentials has been bottom of the barrel for a while . Then again , in the end , your computer is only as safe as the person behind the keyboard .