Roger Sidje has posted a comprehensive update on the
progress of MathML
rendering support in Mozilla over at mozilla.org.
Sidje reports that:
Efforts of the MathML project have culminated to the point
where all presentational
tags are recognized ... Some
presentational tags need another pass to further beautify
their layout ... Also, further work remain to render
<mtable> in a fully standards
compliant
manner
The report contains several screenshots of MathML
rendered in Mozilla.
More details on the project can be found at the MathML in
Mozilla page.