Is there a better alternative to Norton ?

[FairWarning]

Nod32 is pretty good and much easier on the resources. Add in malwarebytes too.

This is what I use, and have no problems. Uses little resources also.

 

[CujoLatte]

http://free.avg.com/

I have this on all 3 laptops and my 2 desktops ...FREE!

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[RobFunk]

You know what is amazing about AVG, is that it will do a scan and you just get a tiny button that says it's going to start the scan. And I can just keep working as if the virus scan isn't happening. Norton was like I have to vacate my machine for an hour or so it can do what it has to.

It updates itself. It's incredibly incognito.

AVG is just so smooth. And it is free, as Cujo points out.