Norton AntiVirus 2009 provides fast and up to the minute defense against all types of malicious software. It keeps your system protected without slowing it down.

Engineered for Speed:
Scans only files and processes at risk using Norton Insight.
Installs in under one minute on average, requires less than 8 MB of memory.

Up-to-the-minute Protection:
Delivers up-to-the-minute protection with rapid pulse updates.
Improved! Provides multilayered security through the Norton Protection System.
Prevents bots from taking control of your PC.
Detects and automatically removes malicious threats.
Improved! Defends against Web-based attacks.
Automatically detects and removes spyware, viruses, Trojans, bots and Internet worms. Boots and repairs badly infected PCs.
Delivers our most complete, deep cleaning scan possible.

Control without disruptions:
Automatically schedules scans and updates to occur while PC is idle.
Review the security status of every process on your PC.
Ensures movies and games are never interrupted.

Free Technical Support:
Tech support without charge from Symantec delivers help however you need it.
 

System Requirement:

Microsoft® Windows Vista® Home Basic/Home Premium/Business/Ultimate**
Microsoft® Windows® XP with Service Pack 2 Home/XP Pro/XP Media Center Edition

300 MHz or faster processor
256 MB of RAM
150 MB of available hard disk space.
Email scanning supported for POP3- and SMTP-compatible email clients.

Browser support for Browser Protection feature:
Microsoft Internet Explorer® 32-bit 6.0 or higher
Mozilla Firefox® 2.0 or higher

*An OEM version is basically a "no frills" version of the packaging. No fancy box, no "paper" manual, just an e-manual on the disk. The software is just the same as standard packaging. Support, however, is not provided by the manufacturer, it is essentially provided by the seller, if they are willing to support it. So, if you can do without manufacturer provided tech support (which most people can), OEM products are a nice options for finding the software cheaper.