How do I find the correct location for the Firefox plugins? There are several directories that seem to have Firefox files: /opt/firefox, /usr/lib/mozilla, /usr/lib/firefox, etc. The Firefox docs just refer to "your Firefox directory", but I don't know which one that is. And it seems to change if, for example, I switch from the Mozilla installation to the Kubuntu installation.

If your binary firefox files were installed to /opt/firefox, go there, and you should see several directories, one will be plugins. This is where you install your plugins. Anything with lib in it, will have library files.

On my system, I have firefox 3.0.5 installed. I downloaded this version and installed myself, so the package manager has not messed with it. The directory for plugins is /opt/firefox/firefox/firefox/plugins.

I also have 3.0.7 installed by the package manager. I had to put the plugins in my home directory.

Here is that structure. /home/myuser/.mozilla/plugins/ The . in front of mozilla makes the directory hidden. This set up allows each user to have their own plugins setup. Firefox bin files are in /usr/bin/ . I don't know why Mandy does it this way, but it works.

Hope this helps.

My problem is that because I installed both the Ubuntu version and the Mozilla version, I'm not sure which one is actually active. If $(which firefox) was a symlink I might be able to tell, but it isn't. So I'm wondering if somewhere in Firefox's tools, preferences, etc., the operative path might be stored.

One way to find out, if you have a desktop icon to start firefox, is to right click, look at properties, and click on the application tab. The path to the executable should be there.