Ubuntu : How to solve "They have been ignored, or old ones used instead."

Ubuntu : How to solve "They have been ignored, or old ones used instead."

When we use Ubuntu with higher version some time we will find this message
after typing sudo apt-get install . . . 

"Some index files failed to download. They have been ignored, or old ones used instead."

Because ubuntu does not support the older versions any more.
:(
but do not worry about it.
We can install the older software on our hinger Ubuntu version.

1.

sudo wget "http://pastebin.com/raw.php?i=uzhrtg5M" -O /etc/apt/sources.list 

2.

sudo apt-get update

3.

done!

#source : http://askubuntu.com/questions/329450/e-some-index-files-failed-to-download-they-have-been-ignored-or-old-ones-used