I suspect this is caused by the firefox/iceweasel plugin cache, causing firefox to not discover new plugins as they are installed.
Try to stop iceweasel, remove ~/.mozilla/firefox/*/pluginreg.dat and start it again, and see if the situation changes. This issue might be a duplicate of bug #547706. Happy hacking, -- Petter Reinholdtsen -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

