libneg.so conflict with compiz-extra during update from Feisty to Gusty

Hi,

This is my first bug in launchpad ^_^ Please excuse my bad english, it's not my native language.

Under my dist-upgrade from Feisty to Gutsy, i had a conflict between the packages "compiz-fusion-plugins-main" and "compiz-extra".

The file "/usr/lib/compiz/libneg.so" was in the two packages. I solved the problem by removing "compiz-extra" with "dpkg -r compiz-extra", but that would be nice, for the beginners, to have an automatic deletion of "compiz-extra", when "compiz-fusion-plugins-main" is installed.

This is my terminal output :

Dépaquetage de compiz-fusion-plugins-main (à partir de .../compiz-fusion-plugins-main_0.0.0+git20070626-0ubuntu1_i386.deb) ...
dpkg : erreur de traitement de /var/cache/apt/archives/compiz-fusion-plugins-main_0.0.0+git20070626-0ubuntu1_i386.deb (--unpack) :
 tentative de remplacement de « /usr/lib/compiz/libneg.so », qui appartient aussi au paquet compiz-extra
dpkg-deb: sous-processus paste tué par le signal (Relais brisé (pipe))
Des erreurs ont été rencontrées pendant l'exécution :
 /var/cache/apt/archives/compiz-fusion-plugins-main_0.0.0+git20070626-0ubuntu1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)