kdenlive cannot be installed

When trying to install kdenlive on my kubuntu system using muojn or also using apt-get, installation breaks with the following error mesage in muon:
"The package system could not be initialised, your configuration may be broken."
Under Details it says: "Unable to correct problems, you have held broken packages."

In apt-get i'm getting this:
[code ]
sudo apt-get install kdenlive
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
 kdenlive : Depends: libmlt4 but it is not going to be installed
            Depends: kdenlive-data (= 0.8.2.1-1ubuntu1) but 0.8.3+git20120505.810ca945-0ubuntu0~sunab~oneiric1 is to be installed
E: Unable to correct problems, you have held broken packages.
[/code]

I've tried this several times over half a year and the error persists. I can install any other pakcage i've tried without problems. Als apt-get doesn't report any dependency problems.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: kdenlive (not installed)
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
Uname: Linux 3.2.0-27-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: amd64
Date: Wed Sep 11 17:04:51 2013
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_GB
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: kdenlive
UpgradeStatus: Upgraded to precise on 2012-05-06 (493 days ago)