Fix Ubuntu Bug of the Last update http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_11.2.202.243.orig.tar.gz

Problem: 

Today after regular system updates I received a following message when I opened a flash required webpage in Firefox "install latest version of adobe flash plugin"

I went to the software centre. It was showing as already installed. So I reinstalled it. On reinstalling it was showing a message that plugin is not available in the archive therefore could not be installed.

i manually tried to access the archive and got 'page could not be found'

Code:

Not Found

The requested URL /pool/partner/a/adobe-flashplugin/adobe-flashplugin_11.2.202.243.orig.tar.gz was not found on this server.
Apache/2.2.14 (Ubuntu) Server at archive.canonical.com Port 80

Question : why is it so?

Execute this Command on terminal and all will happen : 

 wget https://launchpad.net/ubuntu/+archive/partner/+files/adobe-flashplugin_11.2.202.243.orig.tar.gz && sudo /usr/lib/flashplugin-installer/install_plugin /tmp/adobe-flashplugin_11.2.202.243.orig.tar.gz