Sorry, I am not familiar with Firefox on Linux, but Plugins are installed to a Firefox installation (Program Files in Windows) - not the Profile.

IMO, a ~symlink to the applicable version of Java for each Firefox version would be the path to follow.

You can create a plugins folder in each Firefox profile folder and put a symlink to the plugin in that folder.

Note that you can install Java 6U43 in a specific directory via the bin version instead of the RPM version to have them both available.

Hi Cor-el.

I have downloaded the zip format for the required JRE, so I now have several JREs available, only on is the default directory.

Can you provide me with a directory example of the multiple "plugins" directory pls - just to have it clarified. There is a "plugins" directory above the Default Profile - which seems to be a "global" plugins directory.

plugins$ ls -1 ~/.mozilla/

• extensions
• firefox
• plugins

plugins$ ls -1 ~/.mozilla/firefox/

• cc07ye9d.default [Default Profile - FF19]
• Crash Reports
• firefox-17 [New Profile - FF17]
• profiles.ini

Can I create a "plugins" directory at both Profile levels, as :-

1. ~/.mozilla/plugins ---> keep this one empty ??
2. ~/.mozilla/firefox/cc07ye9d.default/plugins
3. ~/.mozilla/firefox/firefox-17/plugins

You can create a plugins folder like ~/.mozilla/firefox/cc07ye9d.default/plugins to install a plugin for only that profile.
The same for ~/.mozilla/firefox/firefox-17/plugins directory.
That should make those plugins appear on the about:addons page (Tools > Add-ons > Plugins).

Plugins found via other locations will probably also show, but you can disable them a desired.

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

Thanks very much for the insight for this issue.