Last thing that changed in my system was I installed AVG antivirus to scan an effected Hard drive.
And I didn't even notice it then. After uninstalling AVG i got a few weird log messages in the console which I ignored for the timebeing.
sudo: /etc/sudoers.d/avg-gui is mode 0755, should be 0440
sudo: /etc/sudoers.d/avg-main is mode 0755, should be 0440
sudo: /etc/sudoers.d/avg-settings is mode 0755, should be 0440
sudo: /etc/sudoers.d/avg-updatedaemon is mode 0755, should be 0440
I also installed the avg gui application from this link
and then uninstalled it as well...
This is after uninstalling the avg. I get this same exact message everytime I sudo any command. I am trying to install multisystem and am not able to install it as it says that I am not root user even though I am using sudo with it.