Hi naimish!
I think you are wrong! Have you ever used norton in a P4 pc which has not a good configuration!
If not then check it that after installing norton are u able to do some work in that pc!
I think NORTON is most bad, I can tell u some viruses which are not detected by norton "lax.exe","avg,vbs" etc.
And kaspersky is so difficult to use and for me it has never crashed a pc even it is a P3!

nortan is bad i agree, kaspersky is confusing, but its good. I have been using it... It blocked things even from the sites on its own...
First of all I really hate this sentences I think you are wrong!

See, this all is depends on someone personal choice and you can't force them. You like Kaspersky, which is as said....confusing. I have used Norton in P4 too, and all I can say is, it's working fine till now. and Yes, I am still able to do my work, even I can run VS.NET in my system.

The disadvantage is only that it's decreases the speed of start-up, and if it have slow down your PC then change the configuration.

The viruses not detected by norton like "lax.exe","avg,vbs" etc. then I can say No One Is Perfect. May you could have report this to Norton.

In Kaspersky, I found much difficulties, if I tell you, after installing it, it got crash my pc, I had to format my PC, that's why I don't like Kaspersky.

Depends on person to person.