I,m using ubuntu 10.04lts (downloaded from original cd) while trying to upgrade (dist-upgrade) to ubuntu 12.04 ltsAn unresolvable problem occurred while calculating the upgrade: E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

[krezza]

ubuntu-bug update-manager
om@om-laptop:~$
(firefox:10380): IBUS-WARNING **: Connect to unix:abstract=/tmp/dbus-8mbsYUOlmd,guid=f83394c43664717fb540cf2e4f608ad5 failed: Failed to connect to socket /tmp/dbus-8mbsYUOlmd: Connection refused.

 release of Ubuntu using Ubuntu 10.04.4 LTS
Release: 10.04

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: update-manager 1:0.134.12.1
ProcVersionSignature: Ubuntu 2.6.32-42.96-generic 2.6.32.59+drm33.24
Uname: Linux 2.6.32-42-generic i686
Architecture: i386
Date: Sun Sep 9 16:26:11 2012
GConfNonDefault:
 /apps/update-manager/check_new_release_ignore=
 /apps/update-manager/first_run=false
 /apps/update-manager/show_versions=false
 /apps/update-manager/window_size=(600,600)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_IN:en_GB:en
 LANG=en_IN.utf8
 SHELL=/bin/bash
SourcePackage: update-manager
VarLogDistupgradeAptclonesystemstate.tar.gz: Error: [Errno 13] Permission denied: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
VarLogDistupgradeTermlog:

[dino99 (9d9)]

This version is no more supported