Comment 21 for bug 211309

I confirm this bug, this is annoying for most french user who have to do their tax declaration on the web,

How it worked for me :

sudo aptitude install firefox-2 sun-java-plugin

cat | patch -p0 << EOF
--- /var/lib/dpkg/info/sun-java5-plugin.postinst.orig 2008-05-25 13:00:19.000000000 +0200
+++ /var/lib/dpkg/info/sun-java5-plugin.postinst 2008-05-25 13:00:53.000000000 +0200
@@ -3,7 +3,7 @@
 PATH=/sbin:/bin:/usr/sbin:/usr/bin

 priority=53
-browser_dirs="xulrunner-addons"
+browser_dirs="xulrunner-addons firefox"
 PLUGIN=libjavaplugin_oji.so
 PLUGINPTH=/usr/lib/jvm/java-1.5.0-sun/jre/plugin/i386/ns7/$PLUGIN
EOF

sudo dpkg-reconfigure sun-java5-plugin

firefox-2 about:plugins

Good luck with other configurations