Free antivirus 2009 software for windows

Norton AntiVirus 2009 provides fast, responsive defense against all types of malicious software including viruses, spyware, worms, and other software threats. It protects your system without slowing it down. Rapid pulse updates every 5 to 15 minutes help to ensure that you?re protected from the latest threats.
Norton AntiVirus stays out of your way while you work or play. It automatically suspends non-critical tasks and alerts while you?re enjoying games and movies. Real-time SONAR (Symantec Online Network for Advanced Response) technology detects emerging viruses without the need for traditional updates or signature-based definitions. And while Web-based attacks may be the single fastest-growing type of online threat, Symantec?s patent-pending Browser Protection lets you surf the Internet with confidence.
Working quickly and quietly in the background, Norton AntiVirus requires far less memory and fewer system resources than other solutions. The new Norton Insight relies on extensive online intelligence to target only those processes at risk, resulting in faster, shorter, fewer scans. And the new Norton Protection System employs a multilayered set of security technologies that work in concert to detect, identify, and block attacks.
? Stops viruses, worms, spyware, bots, and more
? Intelligence-driven for faster, fewer, shorter scans
? Rapid pulse updates every 5-15 minutes
? Protects emails and instant messages
? Blocks infected Web sites

Norton AntiVirus 2009 Definitions Update (Windows XP 64-bit/Vista 64-bit) 11/05/2008 is a useful software for virus detection and repair.

This definitions update is a complete replacement for any previous virus definitions set

Requirements:

• Norton AntiVirus 2008 for Windows XP/Vista for 64-bit OS only
• Norton Internet Security 2008 for Windows XP/Vista for 64-bit OS only
• Symantec Endpoint Protection 11.0 for 64-bit OS only