You have twice as much RAM as the people he was speaking of. I'd say 2GB is pretty low these days, glancing at Dell.com even the $499 entry level laptops are shipping with 4GB.
Wow... My laptop that I do most of my work on is packing 1GB. I guess I have had it for 4? 5? years. Of course, using things like wmii and Emacs help keep my memory usage down, but Firefox is making that harder.