新装系统无法发行升级？？

[freely]

看日志错误如下，请问是怎么回事呢？

Installing libedataserver1.2-7 as dep of libcamel1.2-8
Installing libgail-common as dep of libgtkhtml3.8-15
Installing libgail18 as dep of libgail-common
Installing gcc-3.3-base as dep of libstdc++5
Installing gcc-4.1-base as dep of libstdc++6
Installing libebook1.2-9 as dep of ekiga
Installing libgnomevfs2-common as dep of libgnomevfs2-0
Installing python-gconf as dep of update-manager
Installing python-gnomecanvas as dep of python-gnome2
Installing gnome-media-common as dep of gnome-media
Installing metacity-common as dep of metacity
Installing nautilus-data as dep of nautilus
Installing language-pack-en as dep of language-pack-en-base
Installing dhcp3-common as dep of dhcp3-client
Installing libsasl2-modules as dep of libsasl2
Installing xsane-common as dep of xsane
Installing python-gtkhtml2 as dep of python-gnome2-extras
Installing libatspi1.0-0 as dep of brltty-x11
Installing brltty as dep of brltty-x11
Installing gnome-games-data as dep of gnome-games
Installing libecal1.2-7 as dep of evolution-exchange
Installing libedata-book1.2-2 as dep of evolution-exchange
Installing libedata-cal1.2-6 as dep of evolution-exchange
Installing libedataserverui1.2-8 as dep of evolution-exchange
Installing libexchange-storage1.2-2 as dep of evolution-exchange
Installing libegroupwise1.2-12 as dep of evolution
Installing evolution-data-server as dep of evolution
Installing evolution-data-server-common as dep of evolution-data-server
Installing libgtksourceview-common as dep of libgtksourceview1.0-0
Installing gedit-common as dep of gedit
Installing python-gmenu as dep of gnome-menus
Installing language-pack-gnome-en as dep of language-pack-gnome-en-base
Installing capplets-data as dep of gnome-control-center
Installing libgnome-window-settings1 as dep of gnome-control-center
Installing hplip-data as dep of hplip
Installing gconf2-common as dep of gconf2
Installing cupsys-client as dep of cupsys-bsd
Installing libpt-1.10.0 as dep of libpt-plugins-v4l2
Installing gnome-terminal-data as dep of gnome-terminal
Installing cpp-4.1 as dep of gcc-4.1
Installing libgcc1 as dep of gcc-4.1
Installing libpoppler1 as dep of libpoppler1-glib
Installing libc6 as dep of libc6-i686
Installing volumeid as dep of udev
Installing python-gtk2 as dep of python-glade2
Installing language-selector-common as dep of language-selector
Installing libvte-common as dep of libvte9
Installing libcairo-perl as dep of libgtk2-perl
Installing language-pack-zh as dep of language-pack-zh-base
Installing liboobs-1-2 as dep of gnome-applets
Installing gnome-applets-data as dep of gnome-applets
Installing libbtctl4 as dep of libgnomebt0
Installing gnome-panel-data as dep of gnome-panel
Starting
Starting 2
Investigating system-tools-backends
Package system-tools-backends has broken dep on liboobs-1-1
Considering liboobs-1-1 0 as a solution to system-tools-backends 3
Added liboobs-1-1 to the remove list
Fixing system-tools-backends via remove of liboobs-1-1
Done
Installing startup-tasks as dep of ubuntu-minimal
Installing upstart as dep of startup-tasks
Installing system-services as dep of ubuntu-minimal
Installing upstart-compat-sysv as dep of system-services
Installing upstart-logd as dep of ubuntu-minimal
Installing util-linux-locales as dep of ubuntu-minimal
Installing avahi-daemon as dep of ubuntu-desktop
Installing libavahi-core4 as dep of avahi-daemon
Installing libdaemon0 as dep of avahi-daemon
Installing libgl1-mesa-glx as dep of ubuntu-desktop
Installing xorg as dep of ubuntu-desktop
Installing libgl1-mesa-dri as dep of xorg
Installing onboard as dep of ubuntu-desktop
Installing python-virtkey as dep of onboard
ERROR:root:IOError in cache.commit(): 'Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u4_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 4_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 5_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 5_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... .2_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... -2_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u3_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 7_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... .3_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
'. Retrying (currentTry: 0)
ERROR:root:IOError in cache.commit(): 'Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u4_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 4_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 5_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 5_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... .2_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... -2_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u3_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 7_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... .3_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
'. Retrying (currentTry: 1)
ERROR:root:IOError in cache.commit(): 'Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u4_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 4_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 19_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 6_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 5_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 5_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... .2_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 2_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... -2_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u3_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 7_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... .3_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 3_i386.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... u6_all.deb 404 Not Found
Failed to fetch http://cn.archive.ubuntu.com/ubuntu/poo ... 0_i386.deb 404 Not Found
'. Retrying (currentTry: 2)
ERROR:root:not handled expection:
Traceback (most recent call last):

File "/usr/bin/update-manager", line 81, in ?
if not controler.doDistUpgrade():

File "/usr/lib/python2.4/site-packages/DistUpgrade/DistUpgradeControler.py", line 457, in doDistUpgrade
self.abort()

File "/usr/lib/python2.4/site-packages/DistUpgrade/DistUpgradeControler.py", line 543, in abort
self.sources.restoreBackup(self.sources_backup_ext)

AttributeError: 'DistUpgradeControler' object has no attribute 'sources'