Do the following to install on (K)Ubuntu 6.06 if you already have Flash 7 installed:
This got it working straight away for Firefox and Konqueror.
tar xvjf FP9_plugin_beta_101806.tar.gz
sudo cp libflashplayer.so /usr/lib/mozilla/plugins/
sudo cp libflashplayer.so /usr/lib/flashplugin-nonfree/libflashplayer.so
sudo cp libflashplayer.so /usr/lib/firefox/plugins/
cp libflashplayer.so ~/.mozilla/plugins/
If I can get this working acceptably then our company's clients can save some $$$ in Windows licences when we set up a kiosk/POS application for them.