[windows update] Windows Installer (MSI) KB927891
 

Update for Windows XP (KB927891)
Date last published: 5/22/2007
Download size: 1.2 MB
This is a reliability update. This update resolves an issue in the Windows Installer (MSI) that can affect performance during software updates. After you install this item, you may have to restart your computer.

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details link: http://go.microsoft.com/fwlink/?LinkId=85649

for them who may have windows update disable so you know of it.