Can't install updates - Error occurred

[Pearl Schneider]

Binary package hint: firefox-3.0

I can't say if this is a bug or if there is some difficulty with these packets at Ubuntu's end, but I have tried off and on for ~24h to update the system and the above is what I get every time. Just thought you all should know.
I have never had a similar problem.

Mozilla Firefox 3.6.17 Hardy Heron 8.04

                                                    ERROR MESSAGES FOLLOW
W: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/p/pam/libpam-runtime_0.99.7.1-5ubuntu6.3_all.deb
  404 Not Found [IP: 91.189.92.167 80]

W: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/p/pam/libpam0g_0.99.7.1-5ubuntu6.3_i386.deb
  404 Not Found [IP: 91.189.92.167 80]

W: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/p/pam/libpam-modules_0.99.7.1-5ubuntu6.3_i386.deb
  404 Not Found [IP: 91.189.92.167 80]

ProblemType: Bug
Architecture: i386
Date: Wed Jun 1 11:14:22 2011
DistroRelease: Ubuntu 8.04
Package: firefox 3.6.17+build3+nobinonly-0ubuntu0.8.04.1
PackageArchitecture: i386
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.24-29-generic i686

[Chris Coulson (chrisccoulson)]

Hi. This is fallout from bug 790538. If you run "sudo apt-get update" again, then it should all be fixed

[Chris Coulson (chrisccoulson)]

FYI, https://bugs.launchpad.net/ubuntu/+source/pam/+bug/790538/comments/11