cannot run some upgrades like compiz because it will uninstall ubuntu desktop

[agbemenu]

ERROR:root:failed to mark 'ubuntu-desktop' for install (E:Unable to correct problems, you have held broken packages.)

cannot run some upgrades like compiz because it will uninstall ubuntu desktop

ProblemType: BugDistroRelease: Ubuntu 13.04
Package: ubuntu-release-upgrader-core 1:0.192.5
ProcVersionSignature: Ubuntu 3.8.0-3.7-generic 3.8.0-rc5
Uname: Linux 3.8.0-3-generic x86_64
ApportVersion: 2.8-0ubuntu4
Architecture: amd64
CrashDB: ubuntu
Date: Sat Feb 2 11:30:21 2013
InstallationDate: Installed on 2012-09-12 (142 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64+mac (20120905.2)
MarkForUpload: True
PackageArchitecture: allSourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to raring on 2013-02-01 (0 days ago)

[Fabio Marconi (fabiomarconi)]

Hallo are you experiencing again this issue ?
thanks
fabio

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[Fabio Marconi (fabiomarconi)]

We're closing this bug since it is has been some time with no response from the original bug reporter. However, if the issue still exists in the latest development version of Ubuntu and you are the original reporter please feel free to reopen with the requested information. If you are not the original reporter, please don't reopen this one but instead file a new bug and reference this one.