If you look at their Top Security Suites section you will find that they rank Norton Internet Security 2006 as No1.
I have been in the IT business since 1979 and support hundreds of customers in the UK and can tell you from personal experience that this product is unreliable, it will slow your machine, it fiddles with the Operating System Kernel, and is such a mess that, by the company's own admission, is a nightmare to try and remove.
PC World is what I class as a "Wowie Zowie" magazine - short on technical know-how but really good at articles on the lines of "Wowie Zowie this machine/software is so cool/fast/complicated [delete where not applicable]!"