I am trying to update my computer using the update manager. However, when it tries to download packages, it stops at one package and produces the following error.
W: Failed to fetch http://packages.freecontrib.org/ubuntu/plf/dists/intrepid/Release.gpg Could not connect to packages.freecontrib.org:80 (34.52.53.34), connection timed out
W: Failed to fetch http://packages.freecontrib.org/ubuntu/plf/dists/intrepid/free/i18n/Translation-en_US.bz2 Unable to connect to packages.freecontrib.org http:
W: Failed to fetch http://packages.freecontrib.org/ubuntu/plf/dists/intrepid/non-free/i18n/Translation-en_US.bz2 Unable to connect to packages.freecontrib.org http:
W: Failed to fetch http://packages.freecontrib.org/ubuntu/freecontrib/dists/intrepid/Release.gpg Unable to connect to packages.freecontrib.org http:
W: Failed to fetch http://packages.freecontrib.org/ubuntu/freecontrib/dists/intrepid/free/i18n/Translation-en_US.bz2 Unable to connect to packages.freecontrib.org http:
W: Failed to fetch http://packages.freecontrib.org/ubuntu/freecontrib/dists/intrepid/non-free/i18n/Translation-en_US.bz2 Unable to connect to packages.freecontrib.org http:
W: Failed to fetch http://mirror.ubuntulinux.nl/dists/intrepid-seveas/all/binary-i386/Packages.gz 404 Not Found
W: Failed to fetch http://mirror.ubuntulinux.nl/dists/intrepid-seveas/all/source/Sources.gz 404 Not Found
W: Some index files failed to download, they have been ignored, or old ones used instead.
How can I fix this? Thanks for all help in advance.