Flash on Firefox (For Ubuntu 9.04 AMD64)

swfdec/gnash does not work well with BBC iplayer. So I decided to remove them. Also the default flash comes with the software repository doesn't work. I removed them all.

sudo apt-get remove swfdec-mozilla
sudo apt-get remove mozilla-plugin-gnash
sudo apt-get remove flashplugin-nonfree

Then reinstalled the Flash plugin nonfree with official flash plugin (amd64)
unzip and save the file into ~/.mozilla/plugins (create this folder if doesn't exist).