Comment 20 for bug 579300

Happy it work's for you as well.

If there is an next kernel upgrade, It's many times accompanied with some more heavy upgrades.
Indeed when you see such one, do not update.
start op with ubuntu's original kernel first . (by selecting the ubuntu's orig kernel during boot in grub boot menu).
then uninstall the custom kernel and headers. Perform upgrade. reboot like asked to finish update.

If you do not do that there is a change that you end up with boot failure. and message:

"udevadm trigger is not permitted while udev is unconfigured."

 i was not able to resolve that problem on last update and ended up having to reinstall maverick from scratch.