Comment 33 for bug 153980

I'm running 2 computers (Feisty Fawn 7.04) since a few months. On one computer (I call it 'server') I run apt-proxy configured to get updates from http://ftp.hosteurope.de/mirror/archive.ubuntu.com (but it doesn't matter which source I use as I tested several different sources). The second computer (I call it 'client') is using the apt-proxy of 'server'. I updated 'client' to Gutsy Gibbon using apt-proxy from 'server' last week. This was working fine without any trouble.

After feeling sure about the new distribution I tried to update 'server' today. It is configured to use it's own local apt-proxy. This system was always working fine before. But the update procedure on 'server' fails with the error message ("Getting update prerequisites failed").

I already reconfigured Synaptics to update the main branch only which did not solve the error.

Here's my /var/log/dist-upgrade/main.log:

2007-10-31 14:09:37,654 INFO release-upgrader version '0.81' started
2007-10-31 14:09:38,274 DEBUG lsb-release: 'feisty'
2007-10-31 14:09:38,274 DEBUG _pythonSymlinkCheck run
2007-10-31 14:09:39,414 DEBUG checkViewDepends()
2007-10-31 14:09:39,415 DEBUG getRequiredBackports()
2007-10-31 14:09:41,633 ERROR IOError in cache.update(): 'Failed to fetch http://de.archive.ubuntu.com/ubuntu/dists/feisty-backports/main/debian-installer/binary-i386/Packages.gz 404 Not Found [IP: 141.30.3.82 80]
'. Retrying (currentRetry: 0)
2007-10-31 14:09:43,893 ERROR IOError in cache.update(): 'Failed to fetch http://de.archive.ubuntu.com/ubuntu/dists/feisty-backports/main/debian-installer/binary-i386/Packages.gz 404 Not Found [IP: 141.30.3.82 80]
'. Retrying (currentRetry: 1)
2007-10-31 14:09:47,174 DEBUG marking 'release-upgrader-apt' for install
2007-10-31 14:09:47,219 DEBUG marking 'release-upgrader-dpkg' for install
2007-10-31 14:09:47,596 DEBUG pre-requists item: '<pkgAcquire::ItemIterator object: Status: 3 Complete: 0 Local: 0 IsTrusted: 0 FileSize: 1924684 DestFile:'/tmp/tmphVdR8U/backports/partial/release-upgrader-dpkg_1.14.5ubuntu11.2_i386.udeb' DescURI: 'http://de.archive.ubuntu.com/ubuntu/pool/main/r/release-upgrader-dpkg/release-upgrader-dpkg_1.14.5ub'
2007-10-31 14:09:47,596 ERROR pre-requists item 'http://de.archive.ubuntu.com/ubuntu/pool/main/r/release-upgrader-dpkg/release-upgrader-dpkg_1.14.5ubuntu11.2_i386.udeb' is NOT trusted