During upgrade process I get a message that upgrade is not possible because of package conflict.

[Tomasz Czaus]

"Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade:
E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

 This can be caused by:
 * Upgrading to a pre-release version of Ubuntu
 * Running the current pre-release version of Ubuntu
 * Unofficial software packages not provided by Ubuntu

If none of this applies, then please report this bug using the command 'ubuntu-bug update-manager' in a terminal."

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: update-manager 1:0.152.25.8
Uname: Linux 3.3.1-tcz x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Sun Apr 8 14:35:41 2012
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to oneiric on 2012-04-08 (0 days ago)

[Brian Murray (brian-murray)]

From Aptlog.txt:

Investigating (9) libgconf-2-4 [ amd64 ] < none -> 3.2.5-0ubuntu2 > ( libs )
Broken libgconf-2-4:amd64 Breaks on gconf2 [ amd64 ] < 3.2.3-0ubuntu0.1 -> 3.2.5-0ubuntu2 > ( libs ) (< 3.2.3-2)
  Considering gconf2:amd64 5 as a solution to libgconf-2-4:amd64 11
  Upgrading gconf2:amd64 due to Breaks field in libgconf-2-4:amd64
Broken libgconf-2-4:amd64 Breaks on libgconf2-4 [ amd64 ] < 3.2.3-0ubuntu0.1 -> 3.2.5-0ubuntu2 > ( libs ) (< 3.2.3-2)
  Considering libgconf2-4:amd64 4 as a solution to libgconf-2-4:amd64 11
  Upgrading libgconf2-4:amd64 due to Breaks field in libgconf-2-4:amd64
Investigating (9) gconf2 [ amd64 ] < 3.2.3-0ubuntu0.1 -> 3.2.5-0ubuntu2 > ( libs )
Broken gconf2:amd64 Depends on gconf-service [ amd64 ] < none -> 3.2.5-0ubuntu2 > ( libs )
  Considering gconf-service:amd64 6 as a solution to gconf2:amd64 5
  Holding Back gconf2:amd64 rather than change gconf-service:amd64
Investigating (9) libgconf2-4 [ amd64 ] < 3.2.3-0ubuntu0.1 -> 3.2.5-0ubuntu2 > ( libs )
Broken libgconf2-4:amd64 Depends on gconf-service [ amd64 ] < none -> 3.2.5-0ubuntu2 > ( libs )
  Considering gconf-service:amd64 6 as a solution to libgconf2-4:amd64 4
  Holding Back libgconf2-4:amd64 rather than change gconf-service:amd64
Done