I have almost the same problem as SW (old hardware that dont work with grub1 or 2) and the bug is still present in ubuntu 10.04. As installning any grub package breaks my installation this workaround makes kernel upgrades configure properly:
sudo -s ln -s /bin/true /sbin/update-grub apt-get upgrade (of course the ln command only has to be run one time) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/449005 Title: package linux-image-2.6.28-15-generic 2.6.28-15.52 failed to install/upgrade: subprocess post-installation script returned error exit status 2 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs