oh, it's so wierd. first of all, i could not find a preferences file for the address book in the library. so i couldn't trash the address book prefs. second, when i open font book to see if i accidentally disabled any fonts, font book shows NO FONTS and has a little spinning wheel in the upper left corner. so i tried to drag all of the system fonts into font book, and nothing happens - the little wheel keeps spinning, but the "font" column says "no fonts" even though i just dragged all of my system fonts into it.
i am not sure if this is a font book problem, an adress book problem, or both. i have already reinstalled OS X once to try to solve this, and it's the same thing! looks like a trip to the genius bar is in order.