Update Manager can't update apt

[MadhuSoodanan]

Ubuntu 12.04 ... When I tried to update, I got the following results:

The action would require the installation of packages from not authenticated sources

apparmor apt apt-transport-https apt-utils libapt-inst1.4 libapt-pkg4.12 libavcodec53 libavformat53 libavutil51 libpostproc52 libswscale2 libunity-2d-private0 linux-generic-pae linux-headers-3.2.0-25 linux-headers-3.2.0-25-generic-pae linux-headers-generic-pae linux-image-3.2.0-25-generic-pae linux-image-generic-pae linux-libc-dev unity-2d unity-2d-common unity-2d-panel unity-2d-shell unity-2d-spread

Aren't these items authenticated? What should I do?

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1015601/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]