Impossible d'installer openoffice avec apt-get

[Olive <enchere_email@yahoo.fr>]

Bonjour,

Suite à un passage Woody->Testing, j'ai perdu openoffice et je n'arrive
plus à l'installer apparemment suite à une cafouillage de apt-get entre
mes anciens backports et les nouvelles sources testing.

Sur la Woody j'avais installé openoffice grâce à un backport et je suis
alors passé en testing en commentant la ligne du backport dans
sources.list pensant que la mise à jour serait automatique.

Maintenant lorsque je fais :

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apt-get install openoffice.org

: Reading Package Lists... Done
Building Dependency Tree... Done
Package openoffice.org is not available, but is referred to by another
package. This may mean that the package is missing, has been obsoleted,
or is only available from another source
However the following packages replace it:
  ttf-opensymbol openoffice.org-thesaurus-en-us
E: Package openoffice.org has no installation candidate

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apt-get install openoffice

Reading Package Lists... Done
Building Dependency Tree... Done
Package openoffice is not available, but is referred to by another
package. This may mean that the package is missing, has been obsoleted,
or is only available from another source
E: Package openoffice has no installation candidate

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apt-get install openoffice.org-bin

Reading Package Lists... Done
Building Dependency Tree... 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.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  openoffice.org-bin: Depends: openoffice.org (> 1.1.1+1.1.2rc3) but it
is not installable E: Broken packages

***********************************************************************

J'avoue que je ne sais plus trop que faire pour résoudre ce problème ?
Quelqu'un pourrait-il m'indiquer comment aider apt-get ou résintaller sa
base de donnée ?

Merci !