I'm using chrome on linux and I can't see the latex equations. Does anybody also notice that?
I seem to have the same problem now. According to http://code.google.com/p/chromium/issues/detail?id=54981 the problem was introduced around 28 Aug. You were probably using the dev version, right? Anyway, there's also a bug filed against MathJax http://sourceforge.net/tracker/?func=detail&aid=3062770&group_id=261188&atid=1240827
For now, you may want to go to google's bug (first link) and vote for it (see star to the left of 54981) so that we bump the priority of the problem.
If you are using a beta version of Chrome, know that we do not support ANY beta browsers by policy. It's difficult enough supporting the quirks of all the released browsers without adding more beta insanity to the mix.
Have you tried http://www.mathjax.org/demos/ ?
What are you seeing exactly? Do you see empty space, or do you see something like [Math Processing Error]?
I was having issues with the latter, and clearing my browser's cache fixed the problem.