openoffice.org2 non installabile

[Marco Calviani <mirtux@studenti.fisica.unifi.it>]

Salve,
 avrei necessita' di installare openoffice.org2 da experimental. 
Purtroppo quando provo ad eseguire l'installazione ottengo la seguente 
risposta da apt-get:

openoffice.org2:
Depends: openoffice.org2-core but it is not going to be installed
Depends: openoffice.org2-writer but it is not going to be installed
Depends: openoffice.org2-calc but it is not going to be installed
Depends: openoffice.org2-impress but it is not going to be installed
Depends: openoffice.org2-draw but it is not going to be installed
Depends: openoffice.org2-math but it is not going to be installed
Depends: openoffice.org2-base but it is not going to be installed

Suppongo che sia un problema di qualche opzione in /etc/apt/preferences 
ma non sono riuscito a risolverlo.

Grazie anticipatamente,
MC