Anti Virus software that consumes the least system resources

NOD32 and Antivir as everyone is recommending.

 

also imo avira is lighter than the newest nod32 3.0...

 

That's why i always have it running in my tray and never notice any ram usage. heck, i don't even think i'll find it in my processes list.

 

Another nod for NOD32 ... I've been using it for less than a year but it's the only virus program I've ever used that doesn't make me look forward to the next release in the hopes of a more efficient virus scanner.

 

That may also be because it takes them like 3 years to release a 0.1+ increment

Okay not really, but the wait from 2.5 to 3.0 was insanely long (not to mention they came out with only a v2.7 instead of 3.0 in the middle!)

I'm not horribly impressed with the integrated Smart Security suite either. However, the antivirus still seems top-notch. I'm interested in seeing some test results of 3.0.

 

As I've mentioned elsewhere the new NOD32 is less light than v2.

 

Id say Avast, I wasnt impressed with NOD32, AVG is ok. Avast is good in the fact you can control the level of scanning on all sectors. So can strip it down for low resource hogging protection

 

Can any of these software, NOD32, Avast or AVG, be installed in a dual or triple boot system without purchasing 3 licenses? Does the program need to be activated similar to Windows XP Product Activation?