Adobe Flash Player 10.1 Beta 2 was released earlier this year, on December 17 at the Adobe MAX 2009. This release comes with several new features and numerous bug fixes.
To install Flash Player 10.1 Beta 2 in Ubuntu 9.10, just follow the steps below:
First, remove your existing Flash plugin. Do this depending on whether you installed Flash from the repositories or manually. If you installed Flash from the Ubuntu repositories, typing:
sudo apt-get remove --purge flashplugin-installer
should remove your current installation of Flash. If Flash was installed manually, the plugin should be located in the ~/.mozilla/plugins directory, where ~ is the home directory. So, to remove it:
rm -f ~/.mozilla/plugins/libflashplayer.so
Next, download the archive for the new Flash player from here (direct link here), or alternately you can type in a terminal:
Make sure the current working directory is the one where you saved the archive and uncompress it:
tar -xzf flashplayer10_1_p2_linux_121709.tar.gz
Next, create the ~/.mozilla/plugins directory (if it doesn't already exist):
mkdir -p ~/.mozilla/plugins
And copy the plugin inside it:
cp install_flash_player_10_linux/libflashplayer.so ~/.mozilla/plugins
Now restart Firefox and this should be all.