There is a solution from
Source: http://www.justin.my/2010/08/solvedpackage-adobe-flashplugin-is-virtual-on-64bit-ubuntu-10-04/
you can try
sudo add-apt-repository ppa:sevenmachines/flash && sudo apt-get update && sudo apt-get install flashplugin64-installer
There is a solution from
Source: http:// www.justin. my/2010/ 08/solvedpackag e-adobe- flashplugin- is-virtual- on-64bit- ubuntu- 10-04/
you can try
sudo add-apt-repository ppa:sevenmachin es/flash && sudo apt-get update && sudo apt-get install flashplugin64- installer