[Bug 1505767] [NEW] [dist-upgrader] error upgrade 14.04.03 lts

[S A]

Public bug reported:

>From upgrade manager i select upgrade to 14.04.03 LTS 
it give me
 
Impossibile calcolare l'avanzamento

An unresolvable problem occurred while calculating the upgrade.

 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

Se non vengono installati, segnalare il problema usando il comando
«ubuntu-bug ubuntu-release-upgrader-core» in un terminale.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.19
ProcVersionSignature: Ubuntu 3.2.0-91.129-generic-pae 3.2.71
Uname: Linux 3.2.0-91-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.11
Architecture: i386
Date: Tue Oct 13 19:49:09 2015
GsettingsChanges: com.ubuntu.update-manager launch-time 1416778246
InstallationMedia: Ubuntu 10.04.3 LTS "Lucid Lynx" - Release i386 (20110720.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2015-10-13 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug dist-upgrade i386 precise third-party-packages

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https://bugs.launchpad.net/bugs/1505767

Title:
   [dist-upgrader] error upgrade 14.04.03 lts

Status in update-manager package in Ubuntu:
  New

Bug description:
  From upgrade manager i select upgrade to 14.04.03 LTS 
  it give me
   
  Impossibile calcolare l'avanzamento

  An unresolvable problem occurred while calculating the upgrade.

   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

  Se non vengono installati, segnalare il problema usando il comando
  «ubuntu-bug ubuntu-release-upgrader-core» in un terminale.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.19
  ProcVersionSignature: Ubuntu 3.2.0-91.129-generic-pae 3.2.71
  Uname: Linux 3.2.0-91-generic-pae i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu17.11
  Architecture: i386
  Date: Tue Oct 13 19:49:09 2015
  GsettingsChanges: com.ubuntu.update-manager launch-time 1416778246
  InstallationMedia: Ubuntu 10.04.3 LTS "Lucid Lynx" - Release i386 (20110720.1)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2015-10-13 (0 days ago)
  VarLogDistupgradeTermlog:

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