It looks like the package xulrunner-1.9.1 is leftover from a previous release of Ubuntu (in the Ubuntu 10.04 LTS) release cycle and for some reason it hasn't caused a problem with upgrades until now. Please remove the package and try completing your upgrade.
** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877967 Title: paquet xulrunner 1.9.1dépendance non satisfaisante , impossible de le supprimer , et mise a jour du sytème bloquer , je n'arrive pas a résoudre ce problème To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1877967/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs