Fwd: grub bug

[Carlos Binz]

Dear Ubuntu experts,
Could you help me with a failure on the installation of the latest version of Ubuntu (10.10)?
After installing it, I keep receiving the following message after booting:
unknown filesystem
grub rescue>

I had a previous installation of Windows XP and performed the advanced installation, partitoning the HD (/ with 15gb; home/ with 120gb and swap with 2gb) as seen below (image taken from terminal using LiveCD):

address@hidden:~$ sudo fdisk -l

Disk /dev/sda: 400.1 GB, 400088457216 bytes
255 heads, 63 sectors/track, 48641 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xd4d0d4d0

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        6374    51199123+   7  HPFS/NTFS
/dev/sda2            6375       32114   206749486+   f  W95 Ext'd (LBA)
/dev/sda3           32114       33937    14648320   83  Linux
/dev/sda4           33937       48642   118114304   83  Linux
/dev/sda5            6375       12748    51199123+   7  HPFS/NTFS
/dev/sda6           12749       19122    51199123+   7  HPFS/NTFS
/dev/sda7           19123       25496    51199123+   7  HPFS/NTFS
/dev/sda8           25497       31870    51199123+   7  HPFS/NTFS
/dev/sda9           31871       32114     1952768   82  Linux swap / Solaris
address@hidden:~$


I even tried the 3 methods of reinstalling Grub2 described on the site below, but there was no difference.

https;//help.ubuntu.com/community/Grub2 

Could you tell me if there is a solution to this bug?
Thank you,
Carlos Binz
from Brazil