Ubuntu Firefox 2.0.x and Flash player not working

Well, another bit of upgrading has borked out the flash player in my Firefox 2.x browser. I took a bit of a look around and saw that the package flashplugin-nonfree was installing its libraries in /var/cache/flash-plugin-nonfree and that only the mozilla installation was symlinking to it.
To solve this issue try this:

# change to the firefox install directory for your plugins
# and symlink to the flashplayer library.
#
$ cd /usr/lib/mozilla-firefox/plugins
$ sudo ln -s /var/cache/flashplugin-nonfree/libflashplayer.so

# now restart firefox and it should be fine again!

Should you be missing sound in your flashplayer, see my previous post on Ubuntu upgrade and Firefox Flash player sound problems fix!.