On Mark Pilgrim’s weblog there’s a nice page about what’s wrong with RedHat’s installer.
I agree. That isn’t to say that there aren’t things wrong with Microsoft installers too, but more people have been indoctrinated with Microsoft jargon than Linux jargon, so, especially at the earliest stages of installation, you must speak in language they understand. Apple, of course, are the long-time masters of this. They generally explain things in a way that can be understood by people who don’t know either set of jargon.