Installing Microsoft Core Fonts
I finally fixed my font problem in Mozilla. The fonts for this website, and many others, where being rendered wrong. In fact, they were horrible.On the f2o.org forum, someone mentioned the Microsoft web fonts. Install these and all the problems would disappear. The only problem was that Microsoft had discontinued this program. Thereby making this option very difficult to follow up on.
So, I did a search on google looking for the web fonts. What I found turned out to be even better then just the fonts. I found a site on sourceforge with the fonts, instructions, and scripts for installing them. I downloaded the necessary things, followed the instructions, and everything worked perfectly. The link is corefonts.sourceforge.net.
The instructions are based on Red Hat 7.3 but they should work for most distros. It involves building some rpms, so you may have to look for them in different places. http://corefonts.sourceforge.net