Lol, you were the one that compared NIS 2009 to Comodo in your original post. I left Comodo out because I don't know anything about it. Regardless, yes, they could/should have kept it slim from the very start (especially in the 90s when people weren't running 4Gb, dual/quad-core processors). But, you have to admit, whether you think they need work or not, they have come a LONG way from those days. To say they haven't would just be ridiculous, I'm sorry. Edit: You know, also, I think resource usage is a poor thing to judge a program on these days. I'm very much aware there are folks out there without the latest and greatest machines, which is fine, no one NEEDS 6Gb systems with quad cores. But, for most of the available machines today, resource usage should be a non-issue, IMHO.