An update is available that improves the performance and reliability of Windows Vista
Description: This update hasn’t yet been pushed through Windows update, but is available for download. It is a ‘rollup’ of a number of hotfixes that are supposed to improve the performance and reliability of Windows Vista.
Update type: Optional
Release date: August 7, 2007
Applies to: All versions
Knowledge base: support.microsoft.com/kb/938979
Download link: 32-bit | 64-bit
Comments: This update resolves the following issues on a Windows Vista-based computer:
- You experience a long delay when you try to exit the Photos screen saver.
- A memory leak occurs when you use the Windows Energy screen saver.
- If User Account Control is disabled on the computer, you cannot install a network printer successfully. This problem occurs if the network printer is hosted by a Windows XP-based or a Windows Server 2003-based computer.
- When you write data to an AVI file by using the AVIStreamWrite function, the file header of the AVI file is corrupted.
- When you copy or move a large file, the “estimated time remaining” takes a long time to be calculated and displayed.
- After you resume the computer from hibernation, it takes a long time to display the logon screen.
- When you synchronize an offline file to a server, the offline file is corrupted.
- If you edit an image file that uses the RAW image format, data loss occurs in the image file. This problem occurs if the RAW image is from any of the following digital SLR camera models:
- Canon EOS 1D
- Canon EOS 1DS
- After you resume the computer from hibernation, the computer loses its default gateway address.
- Poor memory management performance occurs.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB938979.

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Comments
Corrine
Aug 9, 2007 at 5:31 am
Still catching up from vacation, I couldn’t figure why I wasn’t offered the two updates, even after checking Windows Updates. Finally an explanation! Your posts are the only I have seen that explain: “This update hasn’t yet been pushed through Windows update.”
As always, thanks, Joe!
T.Taylor
Aug 10, 2007 at 5:59 pm
This thing causes the network icon in the notification tab to be grayed out and the uninstall does not bring it back.
Joe
Aug 12, 2007 at 9:02 am
Strange, mine shows up fine, so it’s not an across the board error. Something is special about your setup that is conflicting.
Joe
Aug 12, 2007 at 9:12 am
Sometimes it’s the little things that make all the difference!
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