What's your Firefox version and OS? Perhaps this should be reported in the MathJax bug tracker <https://github.com/mathjax/MathJax/issues>. It would be nice if there were an easy hack to switch the MathJax version, but I can't think of one.
]]>Is it possible to make the same configuration here? I visited several heavily TeX'd pages from my iPhone and it took longer than I'd like to load the pages completely.
]]>I'm pretty sure I handled the fonts issue, so fonts should load quickly. Please let me know if there are any problems.
]]>One reason to suggest this upgrade is that with MathJax 1.1 both MO and MSE would hang sometime and completely overload the CPU until Firefox (or otherwise) ask me whether to stop the script or continue.
With MathJax 2.0 on MSE I don't recall this problem anymore, while on MO it still bugs me from time to time.
]]>A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.
Script: http://latex.mathoverflow.net/mathjax1.1/MathJax.js?config=MOconfig:29
]]>Later addition: It seems that they have solved the problem.
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