[Bug 1135934] Re: cannot start systemupdate

[Togo28]

I was ask to run: 
ubuntu-bug ubuntu-release-upgrader-core

Notice from the system:

An unresolvable problem occurred while calculating the upgrade:
The package 'lubuntu-desktop' is marked for removal but it is in the removal blacklist.

 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

This is most likely a transient problem, please try again later.

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https://bugs.launchpad.net/bugs/1135934

Title:
  cannot start systemupdate

Status in “ubuntu-release-upgrader” package in Ubuntu:
  New

Bug description:
  After call for system update i cannot update my system

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: ubuntu-release-upgrader-core 1:0.192.5
  ProcVersionSignature: Ubuntu 3.8.0-7.15-generic 3.8.0
  Uname: Linux 3.8.0-7-generic i686
  ApportVersion: 2.8-0ubuntu4
  Architecture: i386
  CrashDB: ubuntu
  Date: Thu Feb 28 16:50:48 2013
  InstallationDate: Installed on 2012-09-28 (152 days ago)
  InstallationMedia: Lubuntu 12.10 "Quantal Quetzal" - Beta i386 (20120928)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to raring on 2013-02-23 (5 days ago)
  VarLogDistupgradeTermlog:

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