1. It is too much of a resource hog.
Can you elaborte, every version since 2001 has actually used less resoures than the previous. We've greatly reduced the overall footprint (especially in autoprotect).
Does not detect some of the new viruses, ( I have more than two AV's which I check manually once in a fortnight or so, and there have been instances when NAV hasnt detected something and the other AV's have).
I'll call you on this one, please give some exact examples.
Bill