With a BitLocker-enabled system drive on a computer that is running Windows 7 or Windows Server 2008 R2. Then, you shut down the computer. You notice the computer intermittently stops responding during shutdown. Additionally, the operating system seems to have already shut down, and then the screen turns black. However, the computer does not turn off completely. Therefore, you may notice that the computer fan and other devices are still turned on.

This problem does not occur if BitLocker is completely disabled, or if BitLocker is enabled on a data drive but disabled on the system drive.
This post explains the issue and gives you information on the hotfix, which needs to be installed to fix the same.

Microsoft has released six new security bulletins with fixes for a total of 15 vulnerabilities affecting its Windows and Office product lines. Three of the six bulletins are rated “critical,” meaning they can be used to launch remote code execution or worm attacks without any user action. One of the Windows vulnerabilities could expose users to drive-by malware attacks via the browser.

Security bulletins are released monthly to resolve critical problem vulnerabilities. This article provides you with an overview of the new security bulletins being released on November 10, 2009.