Comment 3 for bug 153318

I've been hit by the same bug. In my case the upgrade-manager stopped due to an installed package pixeldemo which does not belong to the ubuntu-distribution.
$ tail -f /var/log/dist-upgrade/term.log
gutsy: Fatal IO error 9 (Bad file descriptor) on X server :0.0.
dpkg: dependency problems prevent configuration of pixeldemo:
 pixeldemo depends on libc6 (>= 2.6-1); however:
  Version of libc6 on system is 2.5-0ubuntu14.
 pixeldemo depends on libfreetype6 (>= 2.3.5); however:
  Version of libfreetype6 on system is 2.2.1-5ubuntu1.1.
 pixeldemo depends on zlib1g (>= 1:1.2.3.3.dfsg-1); however:
  Version of zlib1g on system is 1:1.2.3-13ubuntu4.
dpkg: error processing pixeldemo (--configure):
 dependency problems - leaving unconfigured

But there are also a huge amount of connect errors to the server:
$ tail -f /var/log/dist-upgrade/main.log
Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/libx/libxmu/libxmuu-dev_1.0.3-1ubuntu1_amd64.deb Error reading from server - read (104 Connection reset by peer) [IP: 91.189.89.8 80]
Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/g/gcj-4.2/libgcj8-jar_4.2.1-5ubuntu5_all.deb Connection timed out [IP: 91.189.88.31 80]
Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/j/jakarta-log4j1.2/liblog4j1.2-java_1.2.13-4_all.deb Connection failed [IP: 91.189.88.31 80]
Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/o/openoffice.org/openoffice.org-filter-binfilter_2.3.0-1ubuntu5_amd64.deb Connection timed out [IP: 91.189.88.43 80]
Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/f/foo2zjs/foo2zjs_20070625-0ubuntu1_amd64.deb Connection timed out [IP: 91.189.88.43 80]
'. Retrying (currentTry: 0)
2007-10-19 11:26:23,632 INFO cache.commit()
2007-10-19 11:27:20,112 ERROR SystemError from cache.commit(): installArchives() failed
2007-10-19 11:29:04,516 DEBUG setting MinAge to 2
2007-10-19 11:29:04,559 DEBUG setting MinAge to 2