If it helps,

/usr/lib64/mozilla/plugins/lib is all I have in that directory.

Any idea where your plugins installs into your 64bit installation of Linux 17+ ?

Java installs correctly in the 32 bits version of Firefox 17 (beside the fact that it is auto-disabled because of the blocklist).

thanks

It's definitely /usr/lib64/mozilla/plugins/

Installing IcedTea Java7 gives me /usr/lib64/mozilla/plugins/IcedTeaPlugin.so, and I'm assuming it will be the same for Oracle's Java

On which distro? Here, on our Redhat installation it seems like it uses /usr/lib(64)/firefox instead of .../mozilla since the last firefox updates (version 17.0.3).

Arch Linux. (Quite different to Redhat, but should function the same)

The only thing I have in /usr/lib(64)/firefox/plugins/ is Google Talk Plugins. It's definitely loading from the mozilla folder.

Just a side note, Firefox 20 is the latest version available, so if your distro's repos have it, it would be a good idea to upgrade.

Seems like both /usr/lib(64)/mozilla/plugins and /usr/lib(64)/firefox/plugins are working for you...

I have no clue why my java plugin doesn't show up in the plugins list of my 64 bits installation... I have the libnpjp2.so in all possible folders /usr/lib/mozilla/plugins/ /usr/lib64/mozilla/plugins/ /usr/lib/firefox/plugins/ /usr/lib64/firefox/plugins/

The Java version I need to run is 1.6.0_30 and I can't upgrade it as some other apps need this version to work here.

I was having the same problem also. Plugins weren't working, not a single one.

Then I realized that placing them inside ~/.mozilla/plugins was the solution. Since I'm the only user of my machine, this fix works for me.

I just made a symbolic link for /usr/lib64/mozilla/plugins pointing to ~/.mozilla/plugins and placed all the plugins in there.

Voilá! Every plugin works now :) !