[gentoo-amd64] cnn.com videos crash firefox with a libtotem-complex-plugin.so error

[Grant]

Whenever I try to play a video at cnn.com, firefox crashes with the
following error:

$ firefox
LoadPlugin: failed to initialize shared library
/usr/lib64/nsbrowser/plugins/libtotem-complex-plugin.so
[/usr/lib64/nsbrowser/plugins/libtotem-complex-plugin.so: undefined
symbol: _ZN13nsTArray_base9sEmptyHdrE]
Killed

If I compile firefox without xulrunner it crashes with the very similar:

$ firefox
LoadPlugin: failed to initialize shared library
/usr/lib64/nsbrowser/plugins/libtotem-complex-plugin.so
[/usr/lib64/nsbrowser/plugins/libtotem-complex-plugin.so: undefined
symbol: _ZN13nsTArray_base9sEmptyHdrE]
/usr/lib64/mozilla-firefox/run-mozilla.sh: line 131: 21696 Killed
            "$prog" ${1+"$@"}

I've tried recompiling xulrunner, firefox, and totem with the same
result.  Does anyone have any ideas?

- Grant