Critical Update for IntelliType Pro and IntelliPoint on Windows XP (KB834840)

Critical Update for IntelliType Pro and IntelliPoint on Windows XP (KB834840)
An identified issue causes IntelliType Pro and IntelliPoint to stop responding when Terminal Services settings are changed in Windows XP. Install this update, whether or not you have made changes to Terminal Services settings, to help prevent a possible issue in the future. After you install this item, you may need to restart your computer. Once you have installed this item, it cannot be removed.
Help and support
http://support.microsoft.com/?id=834840