[Bug 1073642] Re: Cannot upgrade from 12.04 to 12.10

[Ambikesh]

Any updates on this, I'm still facing the same problem even after a
month.

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https://bugs.launchpad.net/bugs/1073642

Title:
  Cannot upgrade from 12.04 to 12.10

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  Trying to upgrade from 12.04 to 12.10 using update manager but getting following error:
  Could not calculate the upgrade 

  An unresolvable problem occurred while calculating the upgrade: 
  E:Unable to correct problems, you have held broken 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

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.11
  ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
  Uname: Linux 3.5.0-18-generic i686
  ApportVersion: 2.0.1-0ubuntu14
  Architecture: i386
  Date: Wed Oct 31 22:23:42 2012
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  PackageArchitecture: all
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2012-10-31 (0 days ago)
  VarLogDistupgradeAptclonesystemstate.tar.gz: Error: [Errno 13] Permission denied: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'

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