This is a follow up to "wikipedia is one of the slower sites on the web".
In Math preferences what does the "Recommended for modern browsers" option actually mean? I like to think of myself as someone who uses modern browsers, so i select it on every MediaWiki site in which i open an account, but i never seriously thought about its meaning except fantasizing that it uses MathML, which it probably doesn't.
I also think that trying to select "MathML if possible" didn't change anything for me (Firefox 3.6.8 on XP).
There's a question similar to mine at http://meta.wikimedia.org/wiki/Help_talk:Preferences since 2006.