Open Software Solutions

Consider the following scenario:

•	You run a Windows Presentation Foundation (WPF)-based program on a Windows Vista-based portable computer.
•	The WPF-based program runs an animation.
•	You are operating the computer on battery power.

In this scenario, the computer’s power consumption unexpectedly increases. Therefore, the computer’s battery power decreases more quickly than expected.

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This problem occurs when an animation runs in a WPF-based program. This problem does not occur if you run a WPF-based program that does not run an animation.

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Hotfix information

A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, x86-based versions

File name	File version	File size	Date	Time	Platform
Presentationcore.dll	3.0.6920.2	3,974,656	22-Dec-2006	00:22	x86

Windows Vista, 64-bit versions

File name	File version	File size	Date	Time	Platform
Presentationcore.dll	3.0.6920.2	3,884,544	22-Dec-2006	00:12	x64

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This hotfix also fixes a problem in which the system time may differ from the BIOS time. However, the system time lag may not be resolved completely after you apply this hotfix. Several issues are known to cause this problem.

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