I asked this question on Meta.CSTheory, and the moderator suggested I ask it here.
To cut a long story short, the math support on MathOverflow (even on faketestsite) is much better than the support on CSTheory.
Specifically, when asking or answering a question, MO renders the formulas on the fly, while in CSTheory it takes quite some time before the formulas are processed.
I wanted to know how to tweak MathJax on CSTheory to behave like MO?
PS: I use Chrome (in fact, a Chromium-based browser named SRWare Iron) to access both sites (under Windows XP).