@ gcb: Your log states: Failed to fetch http://.archive.ubuntu.com/ubuntu/dists/feisty-backports/Release.gpg Could not resolve '.archive.ubuntu.com'
This means your /etc/apt/sources.list doesn't contain a valid source for the packets because "http://.archive.ubuntu.com" isn't a valid URL. Try "http://archive.ubuntu.com" instead (without the"." after "http://") or check http://www.ubuntu-nl.org/source-o-matic/ for a valid source near you.
@ gcb: .archive. ubuntu. com/ubuntu/ dists/feisty- backports/ Release. gpg Could not resolve '.archive. ubuntu. com'
Your log states: Failed to fetch http://
This means your /etc/apt/ sources. list doesn't contain a valid source for the packets because "http:// .archive. ubuntu. com" isn't a valid URL. Try "http:// archive. ubuntu. com" instead (without the"." after "http://") or check http:// www.ubuntu- nl.org/ source- o-matic/ for a valid source near you.