updater fails to download certain packages reports cannot find

[Robstr]

When I enter this in the terminal window " sudo apt-get update && sudo apt-get upgrade " ( no quotes of course ) It searches for the update packages but then returns the below message:

W: Failed to fetch http://ca.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en Something wicked happened resolving 'ca.archive.ubuntu.com:http' (-5 - No address associated with hostname)

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

I get a similar message when I use the GUI update manager as well.

I have no problem with my internet connection or my net work, as I am reporting this bug now.
Hopefully this problem can be resolved so I can update the security features and get other important system updates.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.10.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic-pae 3.2.18
Uname: Linux 3.2.0-25-generic-pae i686
ApportVersion: 2.0.1-0ubuntu5
Architecture: i386
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CrashDB: unity
Date: Tue Jun 26 14:45:38 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 LANGUAGE=en_CA:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Bilal Akhtar (bilalakhtar)]

Not a bug in Unity. Moreover, this seems like a DNS problem with your connection, since I can connect to ca.archive.ubuntu.com just fine.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.