additional note: the problem occured when the kernel packages were upgraded from the kubuntu update notifier. It had displayed only these two packages to be upgraded.
I resolved the problem and got to the previous state by uninstalling the unconfigured packages, then installing the older kernel packages with 'apt-get install linux-generic=2.6.31.20.33 linux-image- generic=2.6.31.20.33' Then doing 'apt-get dist-upgrade' installed the new kernel packages and additionally the packages grub-common grub-pc -- linux-image-2.6.31-21-generic failed to install https://bugs.launchpad.net/bugs/572054 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs