Looking for a fast, free antivirus program that's easy to install and use? Microsoft Security Essentials employs practices like active memory swapping and CPU throttling to limit the impact on your PC performance, even on older or less powerful PCs. Get the official release version of this hassle-free antivirus protection for your home PC now at http://www.microsoft.com/security_essentials/ or read more about it at the Microsoft Malware Protection Center.