Comment 1 for bug 557771

Thanks for your report.

This problem is likely due to a corrupted package list. Could you please open a terminal and run the following command:
sudo rm /var/lib/apt/lists/au.archive.ubuntu.com_ubuntu_dists_jaunty-updates_restricted_binary-amd64_Packages
sudo apt-get update

and try performing the upgrade again. This will likely fix your issue. If so then set the status of this report to invalid. Thanks in advance.