FF issues with STIX release

Dear Friends,

I see a few rendering changes in Firefox 3.6.3, Ubuntu 8.04,
after replacing the STIX beta fonts with the STIX fonts released
Friday (28 May).

Two things:

1.  In item 13 -- the recursive radicals -- of the Mozilla Torture
    test, http://www.mozilla.org/projects/mathml/demo/texvsmml.xhtml
    the radical symbols no longer descend properly on
    the left.

    Screenshot (3k): http://www.albany.edu/~hammond/mmlmisc/STIX/t13.png

2.  When a tall integral sign is required, the vertical segment
    in the middle does not have proper horizontal alignment.
    See  http://www.albany.edu/~hammond/gellmu/wprod.xhtml

    Screenshot (3k): http://www.albany.edu/~hammond/mmlmisc/STIX/wprod.png 

Is there a reason why this change of fonts should cause such
"breakage"?

                                    -- Bill