It is said that GNOME is supposed to be "simple," "light," and "easy-to-use," but I see it is quite a levithian beast. Right now, a complete vanilla install is 1013.37 megabytes (826.22 without the games and Tomboy), not including some of the common libraries such as GTK2. There are not too much changes between GNOME releases, but, yet, it continues to grows larger.
As for KDE, a complete vanilla KDE 4.2 install is 914.06 megabytes (643.12 without the games, education, and developer software), not including common libraries such as Qt. KDE is "kuite" heavy [hardware-wise] and comes with everything, including not only the kitchen sink, but an assortment of shiny deluxe-model kitchen appliances, too -- most of which many will probably never use. Despite this, it only requires nearly half (or a third) of the space that "simple," "light," and "easy-to-use" GNOME uses. I sense there is something wrong with this.