Grub bad partition pointing after kernel upgrade

["antonio giulio" <antongiulio05@gmail.com>]

Hi,

everytime I upgrade kernel (debian unstable), grub is automatically
updated. But grub "points" to the $HOME partition and not '/'
partition. And so I must modify menu.lst file manually.
Is it a bug or a bad setting?

example:
If my kernel is in /dev/hda1 and my $HOME in /dev/hda3, after upgrade
grub points for kernel image to /dev/hda3 instead of /dev/hda1

Thanks,
Giulio