Jaunty, Firefox, Notifications

To get the new notification system in Jaunty, install the Firefox plugin called FirefoxNotify.

Jaunty, Firefox, Flash

After upgrading from 8.10 Intrepid to 9.04 Jaunty, flash no longer worked in Firefox. I found the following workaround on this Ubuntu forum thread:

$ sudo apt-get remove flashplugin-* --purge
$ sudo apt-get install flashplugin-nonfree

I am not sure why "reinstalling" the flash plugin does the trick, but I knew that just doing a --reinstall or the above commands without the --purge did not work for me.