I don't actually want a word processor. I prefer using something like DocBook or LaTeX for making presentation-quality printable documents. I wanted something that could read and display RTF with reasonable fidelity. Yesterday, I found that AbiWord does render RTF documents reasonably well, but not that well, and not at all quickly.
Today, I found that AbiWord installs some butt-ugly fonts early in the fontpath (i.e. before the adobe-*-*..-* fonts). Included in this is the AbiWord version of Arial and Times, which Mozilla picks up to render lots of common web pages as hideous, unreadable monstrosities.
First, I didn't realize the cause. When I started poking around, AbiWord left the building post haste. About fifteen minutes later (after I found the brain cells that remembered to do a xset fp rehash) everything started looking normal again.