mdadm + raid1 + sarge

[Gilbert Wong <jaguar.fender@gmail.com>]

i want to set up RAID1 + LVM + GRUB + mdadm and have been following the guides:
http://alioth.debian.org/project/showfiles.php?group_id=30283

everything was fine till Step 4.4. i reboot the system and found the
following message:

wrong fs type, bad option, bad superblock on /dev/md0 or too many
mounted file systems (could this be the IDE device where in fact use
ide-scsi so that sr0 or sda  or so is needed)


here's the content of /etc/fstab:
proc            /proc           proc    defaults        0       0
/dev/sda1       /               ext3    defaults,errors=remount-ro 0       1
/dev/sda9       /home           ext3    defaults        0       2
/dev/sda8       /tmp            ext3    defaults        0       2
/dev/sda5       /usr            ext3    defaults        0       2
/dev/sda6       /var            ext3    defaults        0       2
/dev/sda7       none            swap    sw              0       0
/dev/hdc        /media/cdrom0   iso9660 ro,user,noauto  0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0
/dev/md0        /mnt/md0        ext3    defaults        0       0


is it something wrong with it? 

My system config:
kernel: 2.6.11.2 
SCSI: sda, sdb



please kindly help.