I have added symbolic links pointing to libnpjp2.so of jdk1.8.0_25 (in jdk1.8.0_25/jre/lib/i386/) to the following locations:
With no success. Going to about:plugins and about:extensions shows that firefox is not seeing the links, or not using them successfully. I have restarted both firefox and my computer and the problem persists.
The same symbolic link worked fine prior to firefox requesting permission to update. After finishing updating and restarting, the plugin is not recognized or used. I am currently using the 32-bit plugin from 32-bit Java with 32-bit firefox on a 32-bit lubuntu installation. Current firefox version is 35.0.1, I am unsure as to which version I was using before the update, but I would assume the update immediately preceding it.
I cannot see any reason for it to not work, yet it doesn't. Why is this (if you can think of any more needed information, ask away and I will update the post)?
UPDATE: Found solution - as per https://support.mozilla.org/en-US/kb/use-java-plugin-to-view-interactive-content it can be fixed by removing pluginreg.dat in the profile folder (instructions for locating this can be found at the site).