Where are the other plugins installed that show in your More system details list ?

• http://kb.mozillazine.org/Determining_plugin_directory_on_Linux

See also:

• http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins

You can see the installed plugins on the about:plugins page.
If you set the pref plugin.expose_full_path to true on the about:config page then you see the full path of plugins on the about:plugins page.
It is best not to leave that pref set to true as it exposes that full path to web servers, so reset that pref to false after you are done with the about:plugins page.

about:plugins paths:

/usr/lib/mozilla/plugins

/usr/lib/nspluginwrapper

/usr/lib/mozilla/plugins-wrapped

locations of libnpjp2.so:

[root@localhost epsteins]# find / -name libnpjp2.so

/usr/lib/mozilla/plugins-wrapped/libnpjp2.so

/usr/lib/mozilla/plugins/libnpjp2.so

/usr/java/jre1.6.0_24/lib/i386/libnpjp2.so

/usr/java/jdk1.6.0_24/jre/lib/i386/libnpjp2.so

find: `/home/epsteins/.gvfs': Permission denied

/home/epsteins/.mozilla/plugins/libnpjp2.so

details of various libnpjp2.so:

[root@localhost epsteins]# ls -l /usr/lib/mozilla/plugins-wrapped/libnpjp2.so

lrwxrwxrwx. 1 root epsteins 36 Mar 21 01:07 /usr/lib/mozilla/plugins-wrapped/libnpjp2.so -> /usr/lib/mozilla/plugins/libnpjp2.so

[root@localhost epsteins]# ls -l /usr/lib/mozilla/plugins-wrapped/libnpjp2.so

lrwxrwxrwx. 1 root epsteins 36 Mar 21 01:07 /usr/lib/mozilla/plugins-wrapped/libnpjp2.so -> /usr/lib/mozilla/plugins/libnpjp2.so

[root@localhost epsteins]# ls -l /usr/lib/mozilla/plugins/libnpjp2.so

lrwxrwxrwx. 1 root root 42 Mar 17 13:43 /usr/lib/mozilla/plugins/libnpjp2.so -> /usr/java/jre1.6.0_24/lib/i386/libnpjp2.so

[root@localhost epsteins]# ls -l /usr/java/jre1.6.0_24/lib/i386/libnpjp2.so

-rwxr-xr-x. 1 root root 77510 Feb 2 19:34 /usr/java/jre1.6.0_24/lib/i386/libnpjp2.so

[root@localhost epsteins]# ls -l /usr/java/jdk1.6.0_24/jre/lib/i386/libnpjp2.so

-rwxr-xr-x. 1 root root 77510 Feb 2 19:34 /usr/java/jdk1.6.0_24/jre/lib/i386/libnpjp2.so

[root@localhost epsteins]# ls -l /home/epsteins/.mozilla/plugins/libnpjp2.so

lrwxrwxrwx. 1 root root 36 Mar 20 13:37 /home/epsteins/.mozilla/plugins/libnpjp2.so -> /usr/lib/mozilla/plugins/libnpjp2.so

locations of libnullplugin.so:

[root@localhost epsteins]# find / -name libnullplugin.so

/usr/lib/sunbird-1.0b3pre/plugins/libnullplugin.so

/usr/lib/seamonkey-2.0.12/plugins/libnullplugin.so

/usr/lib/kompozer/plugins/libnullplugin.so

/usr/lib/xulrunner-1.9.2/plugins/libnullplugin.so

find: `/home/epsteins/.gvfs': Permission denied

What does the command "java -version" return? If it returns something like "OpenJDK Runtime Environment (IcedTea6 1.9.7)" this means that the Iced Tea is the default Java and that you will need to set Sun Java as the OS default Java. Fedora should have some details about that, it may require uninstalling Iced Tea Java.