Well this is fun: I'm trying to move my <users> directory to its own partition and am having problems doing so. I followed the directions at this page- http://embraceubuntu.com/2006/01/29/move-home-to-its-own-partition/- (steps taken below)
On  my first attempt at doing this  it would get to the password page just fine. However, upon entering my password the screen would go black and some text would appear then it would go back to the password page no matter which user I tried to login with. So I went back in and fiddled with fstab again and now when I try to load my preferred user it says it '[Can't] update ICEauthority file /home/bmike1/ICEauthority'. I know what the problem with that is.... /home/bmike1 is now /home/bmike1.old. In other words it is still looking for the old directory.
What to do oh what to do! One more question..... why did the UUID of /dev/sda5 (swap) change when I moved it? hmmmmm.... is it because I deleted it and then recreated it where I wanted it? Yeah... I bet that is the problem.


(steps)
1st-
create a partition of sufficient size for your “/home” directory. You may have to use that new hard drive, or adjust/resize the existing partition on your current hard-drive to do this. Let me skip those details.

2nd
mount the new partition:
$mkdir /mnt/newhome
$sudo mount -t ext3 /dev/hda5 /mnt/newhome


2.5
Now, Copy files over:
Since the “/home” directory will have hardlinks, softlinks, files and nested directories, a regular copy (cp) may not do the job completely. Therefore, we use something we learn from the Debian archiving guide:
$cd /home/
$find . -depth -print0 | cpio --null --sparse -pvd /mnt/newhome/

3rd

unmount the new partition:
$sudo umount /mnt/newhome

4th
Make way for the new “home”
$sudo mv /home /old_home

5th
recreate a new /home by:
sudo mkdir /home

6th
Mount the new home:
$sudo mount /dev/hda5 /home

7th

Now, you have to tell Ubuntu to mount your new home when you boot. Add a line to the “/etc/fstab” file that looks like the following:

/dev/hda5 /home ext3 nodev,nosuid 0 2

//////////////////////////////////////////////////////////////////
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sda1 during installation
UUID=9f55ed51-fe35-406c-865d-beb5d83917b2 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=d1b6c267-6e83-4756-b1c7-1e531cedfd1c none            swap    sw              0       0
# /home/bmike1 is on sda6
UUID=46758120-c0c7-444a-a313-b58168af05b5 /home/bmike1    ext4    nodev,nosuid    0        2

WOW! I just figured out that it is doing just what i want (in that it is mounting /dev/sda6 to /home/bmike1)


Michaels-Laptop ~ # blkid
/dev/sda1: UUID="9f55ed51-fe35-406c-865d-beb5d83917b2" TYPE="ext4"
/dev/sda5: UUID="d1b6c267-6e83-4756-b1c7-1e531cedfd1c" TYPE="swap"
/dev/sda6: UUID="46758120-c0c7-444a-a313-b58168af05b5" TYPE="ext4"
/dev/sda7: UUID="9be45b98-d619-4a31-a951-5dd63fab9775" TYPE="ext4"
/dev/sda8: UUID="9a4d41b2-28c6-4907-8463-00d519a36774" TYPE="ext4"
/dev/sda9: UUID="fcd01ca7-d230-4cbe-acf1-200810245394" TYPE="ext4"
/dev/sdb1: LABEL="USB20FD" UUID="0000-0001" TYPE="vfat"
Michaels-Laptop ~ #


--
:-)~MIKE~(-: