Unable to update system on a fresh install

[Guest]

Last night, I recently downloaded and installed Kubuntu 12.04 on a machine. I used the whole HDD for the install. I installed the 32-bit version, even though I could have used the 64-bit version. I configured the network settings to use the proxy server which I have been using on other installations. This is the first time I've installed Kubuntu or Ubuntu with behind a proxy.
I used muon to attempt to get updates and was met with "unable to retrieve" error, listed below.
I did some reading on different places and found that maybe the issue was with the software sources, so I removed a few of them, regardless of the changes, I still get the same thing.
I changed the server from a US server to the main server. Same issue. I changed the main server to the server at Duke.edu. Still nothing.
I have no problem surfing the internet, as the computer I have set up with Kubuntu is the one in which I am currently using.

I opened a terminal and sudo apt-get update, the results:

Ign http://archive.linux.duke.edu precise InRelease     
Ign http://archive.linux.duke.edu precise-updates InRelease
Ign http://archive.linux.duke.edu precise-security InRelease
Err http://archive.linux.duke.edu precise Release.gpg
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates Release.gpg
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security Release.gpg
  Unable to connect to archive.linux.duke.edu:http:
Ign http://archive.linux.duke.edu precise Release
Ign http://archive.linux.duke.edu precise-updates Release
Ign http://archive.linux.duke.edu precise-security Release
Ign http://archive.linux.duke.edu precise/main TranslationIndex
Ign http://archive.linux.duke.edu precise/universe TranslationIndex
Ign http://archive.linux.duke.edu precise-updates/main TranslationIndex
Ign http://archive.linux.duke.edu precise-updates/universe TranslationIndex
Ign http://archive.linux.duke.edu precise-security/main TranslationIndex
Ign http://archive.linux.duke.edu precise-security/universe TranslationIndex
Err http://archive.linux.duke.edu precise/main Sources   
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise/universe Sources
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise/main i386 Packages
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise/universe i386 Packages
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates/main Sources
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates/universe Sources
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates/main i386 Packages
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates/universe i386 Packages
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security/main Sources
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security/universe Sources
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security/main i386 Packages
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security/universe i386 Packages
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise/main Translation-en_US
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise/main Translation-en
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise/universe Translation-en_US
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise/universe Translation-en
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates/main Translation-en_US
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates/main Translation-en
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates/universe Translation-en_US
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-updates/universe Translation-en
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security/main Translation-en_US
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security/main Translation-en
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security/universe Translation-en_US
  Unable to connect to archive.linux.duke.edu:http:
Err http://archive.linux.duke.edu precise-security/universe Translation-en
  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/Release.gpg  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/Release.gpg  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/Release.gpg  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/main/source/Sources  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/universe/source/Sources  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/main/binary-i386/Packages  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/universe/binary-i386/Packages  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/main/source/Sources  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/universe/source/Sources  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/main/binary-i386/Packages  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/universe/binary-i386/Packages  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/main/source/Sources  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/universe/source/Sources  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/main/binary-i386/Packages  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/universe/binary-i386/Packages  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/main/i18n/Translation-en_US  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/main/i18n/Translation-en  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/universe/i18n/Translation-en_US  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise/universe/i18n/Translation-en  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/main/i18n/Translation-en_US  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/main/i18n/Translation-en  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/universe/i18n/Translation-en_US  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-updates/universe/i18n/Translation-en  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/main/i18n/Translation-en_US  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/main/i18n/Translation-en  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/universe/i18n/Translation-en_US  Unable to connect to archive.linux.duke.edu:http:
W: Failed to fetch http://archive.linux.duke.edu/ubuntu/dists/precise-security/universe/i18n/Translation-en  Unable to connect to archive.linux.duke.edu:http:
E: Some index files failed to download. They have been ignored, or old ones used instead.

Can anyone provide any insight as to what I am doing wrong? I'm able to successfully navigate to those URLs so I'm not understanding the breakdown..

[kubicle]

Maybe this will help:
https://help.ubuntu.com/community/Ap...e_a_http-proxy

You can test whether it's a proxy issue by:
1. 'sudo -i' (starting a root shell)
2. 'export http_proxy=http://your.proxy.address:yourproxyport' (set proxy temporarily for root)
3. 'apt-get update' (try update, no sudo needed as you are in the root shell)
4. 'exit' (or Ctrl+D, will return you to your user shell)

(the repo should be fine, I tried it and it works as expected...'deb http://archive.linux.duke.edu/ubuntu/ precise main restricted universe multiverse' in sources.list)