linux user group brescia

Scaricando gli aggiornamenti, il mio grub non si è aggiornato

dando il comando manuale ottengo:

livio a livioquadu:~$ sudo update-grub
[sudo] password for livio:
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /boot/vmlinuz-2.6.28-18-generic
Found kernel: /boot/vmlinuz-2.6.28-17-generic
Found kernel: /boot/vmlinuz-2.6.28-16-generic
Found kernel: /boot/memtest86+.bin
Updating /boot/grub/menu.lst ... done

Il file menu.lst viene riscritto (cambiano data o era del file) ma non 
viene modificato nulla del contenuto e continua ad eseguire il kernel 
2.6.28-16-generic:

## ## End Default Options ##

title		Ubuntu 9.04, kernel 2.6.28-16-generic
uuid		5a131142-4c43-4119-954a-e86d3be94ea8
kernel		/boot/vmlinuz-2.6.28-16-generic 
root=UUID=5a131142-4c43-4119-954a-e86d3be94ea8 ro quiet splash
initrd		/boot/initrd.img-2.6.28-16-generic
quiet

title		Ubuntu 9.04, memtest86+
uuid		5a131142-4c43-4119-954a-e86d3be94ea8
kernel		/boot/memtest86+.bin
quiet

### END DEBIAN AUTOMAGIC KERNELS LIST

# This is a divider, added to separate the menu items below from the Debian
# ones.
title		Other operating systems:
root


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda1
title		Windows NT/2000/XP (loader)
root		(hd0,0)
savedefault
makeactive
chainloader	+1


Mi date un "aiutino"?

Grazie

Livio