Keith Combs put it best over on his blog - "Is DST the new Y2K?"
I don't really know the answer, but if you're looking to learn more about the impact of the change to Daylight Savings Time (resulting from the U.S. Energy Policy Act of 2005) on your infrastructure, see http://support.microsoft.com/gp/dst_overview for a consolidated view of the changes in Microsoft software.
"Saving" is singular.
Right you are. I apologize for the mistake.