Whenever I try to install or remove software I end up getting an authentication failed message. I've already entered my password and it tells me authentication failed. I do know my password but for some reason it doesn't take it my log in and key ring are the same password, mainly since I'm the only one in my family who's comfortable with Linux.
foxxy_gunmage@Rei-Ayanami:~$ sudo ls
[sudo] password for foxxy_gunmage:
Sorry, try again.
[sudo] password for foxxy_gunmage:
Sorry, try again.
[sudo] password for foxxy_gunmage:
Sorry, try again.
sudo: 3 incorrect password attempts
foxxy_gunmage@Rei-Ayanami:~$ groups
foxxy_gunmage adm dialout fax cdrom floppy tape audio dip video plugdev fuse netdev lpadmin nopasswdlogin admin sambashare vboxusers powerdev
foxxy_gunmage@Rei-Ayanami:~$