UPDATE:
It looks like some folks have had problems with this patch. I know that it’s been working fine for me but some folks have reported the inability to boot after installing this fix. It apparently occurs when using AHCI. I quote: "I finally got it to boot when I turned off AHCI and ran the SATA disk in IDE mode."
http://forums.guru3d.com/showthread.php?t=239749
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ORIGINAL POST:
We released a new Reliability & Stability fix patch for Windows Vista (941649) just the other day. There’s details at this KB article: http://support.microsoft.com/kb/941649
This update improves the compatibility, reliability, and stability of Windows Vista. This update includes the following improvements:
- It extends the battery life for mobile devices.
- It improves the stability of portable computers and of desktop computers that use an uninterruptable power supply (UPS).
- It improves the reliability of Windows Vista when you open the menu of a startup application.
- It improves the stability of wireless network services.
- It shortens the startup time of Windows Vista by using a better timing structure.
- It shortens the recovery time after Windows Vista experiences a period of inactivity.
- It shortens the recovery time when you try to exit the Photos screen saver.
- It improves the stability of Windows PowerShell.
This update also resolves the following issues in Windows Vista:
- A compatibility issue that affects some third-party antivirus software applications.
- A reliability issue that occurs when a Windows Vista-based computer uses certain network driver configurations.
The actual download is located here:
http://www.microsoft.com/downloads/details.aspx?FamilyId=E3992046-32B9-4A0D-9E02-ACBA698AA675&displaylang=en
kurtsh
Kurt Shintaku's Blog 