Moving Users Folder Created Extra Directory

The main question is:
"Why have I got a folder called D:\Users\change?"

Now the background:

I had previously relocated the major sub-directories in my Users profile
(Desktop, Documents, Pictures etc) to the D drive by selecting the location
tab under properties.
Today I had to reinstall Vista so decided to use the unattended install
option to move the directories completely from the start.

I created a file on a USB stick called Autounattend.xml with the following
content:
<?xml version="1.0" encoding="utf-8"?>
<unattend xmlns="urn:schemas-microsoft-com:unattend">
<settings pass="oobeSystem">
<component name="Microsoft-Windows-Shell-Setup"
publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS"
processorArchitecture="x86">
<FolderLocations>

<ProfilesDirectory>D:\Users</ProfilesDirectory>
</FolderLocations>
</component>
</settings>
</unattend>

I then put the install disc in the drive and ran the following from the
command line.
e:\setup.exe /unattend:g:\Autounattend.xml

(where e was the CD and g was the USB).

I was pleased at how easy it was and that I ended up with a nice new install
and with the Users directories completely on the D drive (not just the major
parts of it like before).

The only thing that is bothering me is that I now have an extra directory in
the D:\Users directory called "change"
I didn't create a user called this so I am puzzled at why it exists.

I am wondering if it has anything to do with the existing directories that
were on the D drive when I did the reinstall.
Originally I had:
D:\Users\bob
D:\Users\Public

after the reinstall I created my user called bob and named my pc myPC-Name
and I now have the following
D:\Users\bob
D:\Users\bob.myPC-Name
D:\Users\change
D:\Users\Public

Has Vista put my new user in a different dir instead of the orignal one and
created this change dir as a diff???

I'm a bit perplexed!