...from various Microsoft web pages:
Windows Vista Service Pack 1 (SP1) Published: February 20, 2008
Windows Vista Service Pack 1 is an update to Windows Vista that addresses feedback from our customers. In addition to previously released updates, SP1 contains changes focused on addressing specific reliability and performance issues, supporting new types of hardware, and adding support for several emerging standards. Windows Vista SP1 also addresses some management, deployment, and support challenges. On February 4, 2008 Windows Vista Service Pack 1 was released to manufacturing. Windows Vista SP1 will be available to the public in mid-March via Windows Update and the Microsoft Download Center.
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Things to know before you install Windows Vista SP1 Release Candidate: Published: February 14, 2008
• If you have a prior version of the SP1 beta installed, you must uninstall it prior to installing the final version. Use the Control Panel applet "Programs and Features" and select "View installed updates" from the top left of the task pane. Under Windows, look for "Service Pack for Windows (KB936330). • If you've had a previous release of SP1 installed you may encounter an issue with a small set of hardware devices that may not function properly after updating a Windows Vista PC to the final release of SP1. This is an issue with the way the device drivers were re- installed during the SP1 update process, not with the drivers themselves—these drivers worked on Windows Vista RTM (release to manufacturing) and they work on Windows Vista SP1. This problem is typically corrected by simply uninstalling and reinstalling the driver. If reinstalling the driver does not help and you’d like to report a devices/driver bug please download the tool available in this posting http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=2852824&SiteID=... • We are working with the manufacturers of these devices to get the drivers and their install programs updated, and also on other solutions we can use to ensure a smooth customer experience when updating to SP1 over Windows Update. For new PCs provisioned with Windows Vista SP1, this is not an issue.
The Microsoft Windows VISTA Service Pack 1 FAQ can be found at: http://technet.microsoft.com/en-us/windowsvista/bb972745.aspx
...and the Microsoft Windows VISTA Service Pack 1 forum can be found at: http://forums.microsoft.com/TechNet/ShowForum.aspx?ForumID=1992&SiteID=1...
Wayne