After emerging totem with nsplugin and firefox USE flags enabled, the totem plugins are not recognized in firefox (firefox-2.0 beta2). The plugins are in the proper directory (/usr/lib64/nsbrowser/plugins), firefox just won't load them.
This is the error I get (substitute the plugin name for each file provided by totem in the nsplugin dir) LoadPlugin: failed to initialize shared library /usr/lib64/nsbrowser/plugins/libtotem-basic-plugin.so [/usr/lib64/nsbrowser/plugins/libtotem-basic-plugin.so: undefined symbol: NS_CStringContainerFinish] Using firefox 2.0 rc2 and totem 2.16.2-r1
Found this: http://www.mail-archive.com/desktop-bugs@lists.ubuntu.com/msg37129.html
Created attachment 99776 [details, diff] Fixes the error
Added patches for seamonkey and firefox in portage