Since I updated Ubuntu, I am not able to go to login screen. It just keeps on loading but it never goes to the login screen. I logged in using Ctrl+Alt+F1. I typed username and password then this message popped up - "this ubuntu 12.04 system is past its end of life and is no longer receiving security updates. To protect the integrity of this system, it is critical that you enable extended security maintenance updates." followed by a link to ubuntu.com. I just want to login.
Can't comment so I'll at least make the answer explicit and indicate the original question as source:
This answer suggests you delete the files
/run/motd.dynamic which will cause a refresh in
motd.dynamic and get you rid of such message.