Comment 0 for bug 532174

In lucid firefox 3.6 doesn't seem to recognize the plugin in /usr/lib/xulrunner-addons/plugins/ anymore, putting the symlink in /usr/lib/mozilla/plugins/ works, so the following part of the java debian/rules should be changed (line 66ff)

# FIXME: xulrunner-addons only tested on sid, jaunty, karmic
ifeq ($(distribution),Ubuntu)
  browser_plugin_dirs = xulrunner-addons firefox iceape iceweasel mozilla midbrowser xulrunner
  browser_plugin_dirs = xulrunner-addons
else
  browser_plugin_dirs = mozilla
endif

It works fine too if you just remove that.

apt-cache policy sun-java6-plugin
sun-java6-plugin:
  Installed: 6.18-2
  Candidate: 6.18-2
  Version table:
 *** 6.18-2 0
        600 http://archive.canonical.com lucid/partner Packages