A good security software. This Norton internet Security software does not deduct some new viruses like folder.exe which takes the icon of flash player. if there is a folder called norton, the virus will take the name called norton.exe. And if u accidentally run it, it multiplies to each and every folder in ur system. Norton does not deduct this. Also it lags in automatic USB devices scanning (Removable devices scanning).
This is the problem till the current version i.e Norton Internet Security 2012.