XP MCE 2005: error 0x80070643: MSXML 4.0 SP2 Security Update(92567

My OS Window XP Media Center 2005

SQL server feature pack is now listed on the select product when doing a
custom scan on Microsoft Update after installing all the security update
today. I never had SQL server feature pack before on the select product list.
I know for sure that i had Window and office listed only on select product
before. why is SQL server feature pack suddenly appearing on the select
product when doing a custom scan? Is this normal or something went wrong with
the update distribution and has mistakenly put a wrong update? Can anyone
check Microsoft Update if this product is listed?

I also had the following installation failure: error code OxBC2

Here is the Event Viewer Log

Type: Error
Date: 10/11/2006
Time: 8:48:43 AM
Category: Installation
Event ID: 20

Installation Failure: Windows failed to install the following update with
error 0x80070643: MSXML 4.0 SP2 Security Update (925672).

I believe that it downloaded the update for two different product Because i
have this installed MS06-061: Vulnerabilities in Microsoft XML Core Services
could allow remote code execution 924191
http://www.microsoft.com/technet/sec.../ms06-061.mspx

Can Anyone explain why i got this update 925672(failed to installed) and
924191 (sucessfully installed)???