Install Adoble Flash Player 10 in Ubuntu

First we need to remove any existing version of Flash Player that you might have , you can do so easily by issuing the following commands in the Terminal window (Applications -> Accessories -> Terminal ):
Quote : sudo apt-get remove flashplugin-nonfree

Now finally to download and install Adobe Flash Player 10 , issue the following command :
Quote : wget http://fpdownload.macromedia.com/get/flashplayer/current/install_flash_player_10_linux.deb
and

Quote : sudo dpkg -i install_flash_player_10_linux.deb

Flash should be properly installed , you can verify so by launching firefox and typing in "about:plugins" in the address bar. This should show you all the plugins installed in your system , you should see Adobe Flash Player 10 listed here , if it installed properly.