I hear what you're saying, but I think it also has a lot to do with the monitor in question. It contrasts very well on my LCD monitor, in fact it's almost clearer and easier to read for me to read than the yellow. I'd like to hear other people's opinions, as I said, this is the first I've heard of it. If the general consensus is that it's unreadable, I'll consider changing it.
I also wonder if your browser isn't rendering the font correctly; the font isn't supposed to be a thin-line font.
It's a sans serif font, meaning it's clean, but also that it's a little thin. I don't think Mozilla 4 has any notable problems with font rendering at this time. I think the problem is the color, frankly. My monitor is fine, really, but I'm pickier about color contrast than some. You take enough usability classes and you start to notice things other people don't think are all that important (but secretly can be).
Also, Nintendo learned that red is not a good color to stare at on LCD screens when they released the Virtual Boy.
I love the content of the site and I respect you a lot on these forums, but the color scheme of your site just really isn't attractive or easy on the eyes. The yellow text is the only text that I'm comfortable reading and don't tire of looking at, and even then it's not particularly attractive.
Still, I'm trying to read. There's some good stuff there.