I've some news... I resolved the issue downgrading grub to the gutsy version, 0.97-29ubuntu4. So maybe this is a grub bug, not an initramfs-tool one. Bye folks.
** Changed in: grub (Ubuntu) Sourcepackagename: initramfs-tools => grub -- dpkg fails with debconf locked https://bugs.launchpad.net/bugs/189005 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
