At last, my firefox setup is perfected: (Source: https://adblockplus.org/forum/viewtopic.php?t=4422)

This issue was SOLVED here,
comment #6 at https://bugzilla.mozilla.org/show_bug.cgi?id=501173#c6.

Change the plugin firefox uses for java, from libjavaplugin_oji.so to libnpjp2.so.
Done.

For a system wide change:

Code: Select all

# rm /usr/lib/firefox/plugins/libjavaplugin_oji.so# ln -s /usr/lib/java/jre/lib/i386/libnpjp2.so /usr/lib/firefox/plugins/