Java plugin not loading in Firefox 4.0b11, works fine in 3.6.13

Java plugin isn't loading in Firefox 4.0b11, but it works fine in 3.6.13 (and in Google Chrome too). It worked in Firefox 4 before, but broke somewhere around beta 5. libnpjp2.so is not really in the plugins folder, but is a symlink: /usr/lib/mozilla/plugins/libnpjp2.so -> /usr/lib/jvm/ia32-java-6-sun-1.6.0.12/jre/lib/i386/libnpjp2.so. When run from the command line, I see FF trying to load the other symlinked plugins (most totem related) but failing because they are amd64, and FF is built in 32bit. But no messages about libnpjp2.so (which IS 32bit).

this method works for Firefox 4.0 b11..!! [http://www.oracle.com/technetwork/java/javase/manual-plugin-install-linux-136395.html Manually install java plugin....]

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