Comment 1 for bug 365331

this occured to me after a fresh install of jaunty ( released version) with ext4 and then changing sources .lst to karmic and updating, all went well until I installed the 2.6.30-1 kernel , with that kernel I would get grub error 13 , with 2.6.28-11 the boot was ok , reinstalling grub from within karmic allowed me to boot the 30-x kernels , there are several reports of this in the karmic dev forum and reinstalling grub does not seem to work for everyone .