"As you journey through life take a minute every now and then to give a thought for the other fellow. He could be plotting something." - Hagar the Horrible

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"Name: Update for Windows Vista (KB940510)
Type: Important

INTRODUCTION
This update enables Windows Vista to detect activation exploits that bypass product activation and that interfere with usual Windows operation. An exploit is a form of software that replaces or modifies authentic Windows components. When exploits are present on a system, it indicates that a software or hardware vendor may have tampered with genuine Windows to enable the sale of counterfeit software. Therefore, the security and the privacy of the computer are put at risk. After this update is installed, you will know if exploits are present on the system.

... Note Installing this update does not affect the functionality of your operating system.

MORE INFORMATION
This update for Windows Vista detects exploits that may be present on a system. An exploit bypasses licensing and activation. This behavior allows for counterfeit copies of Windows Vista to run without ever having to be activated. Activation exploits make alterations to key Windows system files. These exploits affect both system stability and security.

When the update is installed, no functionality of your operating system will be affected. If no exploits are detected, the update silently exits. If exploits are detected, you will be provided a link to a Web site that describes how you can remove the exploits. When the exploits are removed, you may be asked to use a valid product key to activate your copy of Windows. If you do not want to remove the exploits, Windows may disable the exploits and then ask you to use a valid product key to activate Windows."


Nice try.

Though I suppose "does not affect the functionality of your operating system" is technically correct, now that they've removed the Vista kill switch.


[Addendum:

ZDNet reports that the update only runs once, and just notifies you if your system has been 'prey' to a Vista activiation exploit. "Even after detecting a bypass hack, Windows still reports itself as a genuine, activated copy" - it really doesn't change anything after you get rid of the dialog box informing you that you may be using counterfeit software.

My Digital Life has more information on activation hacks this update doesn't fix, and the names of the 2 it does.]