Intelligent Protection
• IMPROVED! Norton Protection System delivers multiple layers of security that
  work together to provide comprehensive Internet threat protection.
• NEW! Norton Safe Web identifies unsafe and dangerous web sites right in your
  search results.
  
• IMPROVED! Norton IdentitySafe offers one-click log-ins and automatic form
  filling to prevent key loggers from stealing your information as you type.
  
• NEW! Norton IdentitySafe On-the-Go lets you access your most up-to-date log-ins
  and passwords on any Norton Internet Security 2010 protected PC.
  
• Industry-leading anti-phishing technology authenticates safe sites and protects you
  from visiting unsafe and fraudulent web sites.
  
• NEW! Analyzes downloads, files and applications and tells you if they can be
  trusted before you install and use them.
  
• IMPROVED! Vulnerability Protection guards security holes in your operating
  system, applications, browsers and browser plug-ins.
  
• IMPROVED! Detects and gets rid of even the hardest to find Internet Explorer
  and Firefox cookies.
• Smart Firewall stops hackers and makes intelligent security decisions for you.
• NEW! Parental Controls give you insight into your kids’ online activities so
  you can teach them good Internet habits and help keep them safe.
  
• IMPROVED! Norton Bootable Recovery Tool repairs, restores and boots
  severely infected, unbootable PCs.
  
• NEW! Professional-strength antispam protection uses the same technology
  as many large businesses to effectively block unwanted emails.

Engineered for Speed
• IMPROVED! Proven fastest, lightest security suite for protection that won’t
  slow you down, get in your way, or swallow up system resources. More info
• IMPROVED! Norton Insight scans only files at risk for fewer, shorter scans
  and the fastest scanning times in the industry. More info
• Uses less memory than any other security suite. More info
• Won’t slow you down when you download, copy, or edit files, or install applications. More info

Combats today's rapid-fire attacks
• NEW! Norton Insight Network uses Symantec’s global security network to provide
  real-time protection from the latest-breaking threats.
• NEW! SONAR 2 (Symantec Online Network for Advanced Response) uses online
  intelligence and proactive monitoring to detect and stop new threats.
• Norton Pulse Updates provide rapid mini updates every 5 to 15 minutes for up-to-the-minute
  local protection against the latest threats.
• Prevents bots from taking control of your PC.
• Finds and removes rootkits.
• Prevents Internet worms from getting on your PC.
• Tells you which application processes currently running on your PC are safe and which are at risk.
• Norton Bootable Recovery Tool provides a deep level of cleaning for heavily infected PCs.

Provides info on threats, downloads and files
• NEW! Norton Download Insight warns you of dangerous downloads before you install and use them.
• NEW! Norton Threat Insight tells you if threats were detected, what actions the threats
  attempted to perform on your system, and how Norton Internet Security eliminated those threats.
• NEW! Norton File Insight tells you where files and applications came from, if they’re trusted,
  and how they may be impacting your PC’s speed.

Helps keep your PC running at top speed
• NEW! Norton System Insight helps you improve and maintain PC and application performance.
• NEW! Automatic and on-demand application optimization improves application performance.
• NEW! Norton System Insight gives you an overview of recent events on your PC such as installs,
  downloads, scans and detected threats, so you can see what events may have impacted your PC’s performance.
• NEW! Norton System Insight resource usage graphs help you pinpoint what’s causing your PC to slow down.
• NEW! Tells you how files and applications impact your PC’s performance.

Protection without disruption
• Smart Scheduler conducts scans and other tasks only when your PC is idle.
• Automatically switches to Silent Mode (no alerts, updates or scans) when watching movies
  or playing games in full-screen mode.
• NEW! Automatically delays product updates and other tasks if you’re watching TV or burning CDs/DVDs.
• NEW! Power Saver Settings help extend portable PC battery life by putting off
  power-intensive activities until your computer is plugged in.

Additional Features
• NEW! Monthly report tells you what Norton Internet Security has done in the
  past month to protect you and your PC.
• Free 24x7 support by phone, email, live chat or online knowledge base.**
• Automatically scans emails and IMs for infections.
• Maps and monitors your home wireless network so you can see everything
  connected to it — even unauthorized visitors like the PC next door.
• Automatically downloads protection updates and new product features as they become
  available during your service period.
• With the Norton Automated Renewal Service your yearly subscription can be automatically
  renewed for uninterrupted protection.

More info

Do you have a netbook? Click Here for Norton Internet Security Netbook Edition.