Still on Beta 1, after latest updates, the problem appears to be fixed. So I'm closing this (although I don't really know if/how it has been specifically fixed...)
** Changed in: grub2 (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746807 Title: Error message right after Ubuntu (Natty) login: package grub-pc 1.99~rc1-6ubuntu1 failed to install/upgrade: subprocess script post- installation installé was killed by signal (Complété) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs