KB938979 Confirming Correct Installation

I did have a problem installing this update but I have now managed to get it
to install after recreating all my moved 'c:\users' folders as described in
other earlier threads. Obviously I now what to confirm that it was actually
installed correctly.

However, when I look at the list of file names & versions listed for the
update in the KB article to confirm it was installed correctly I get
confused! Taking a look at the first file on the list 'Aithui.dll':

....in my system32 folder I get v6.0.6000.16513 which doesn't seem to be the
one mentioned in the KB article. However I do have the correct version
listed in:

C:\Windows\SoftwareDistribution\Download\ea2600ac5 dd0e172b500762b154fd0a7\x86_microsoft-windows-authentication-authui_31bf3856ad364e35_6.0.6000.20628_none_0a893b ce1167f643

and

C:\Windows\winsxs\x86_microsoft-windows-authentication-authui_31bf3856ad364e35_6.0.6000.20628_none_0a893b ce1167f643

So - have I confirmed that is or is not correctly installed?

TIA