If we are running Exchange 2007 Enterprise Edition (installed about a month ago) and all clients have the DST patches on them, do I need to run the Exchange Calendar Update Tool or do anything else to prepare for the upcoming time change in November? I read on Daylight SavingTime Update Guide that for Exchange 2007 after February 2007, you don't have to do anything as far as patches. I just want to make sure we are prepared for the upcoming time change and if there was a way to verify we are ready, I would appreciate any information. Thanks in advance!