le dipendenze che mi da sono: mozilla-firefox: Depends: libgtk2.0-0 (>= 2.4.4) but it is not going to be installed
Depends: libpango1.0-0 (>= 1.4.1) but it is not going to be installed
Depends: libxft2 (> 2.1.1) but it is not going to be installed
Depends: libxrender1 but it is not going to be installed
E: Sorry, broken packages

per quanto riguarda i repository nella source.list sono quelli indicate dalla distro al momento dell'installazione!!!