http://blogs.msdn.com/b/hied_mid-atlantic/archive/2007/01/17/exchange-sp2-dst-2007-fix-is-now-available.aspxMicrosoft has released the final production version of the update for DST 2007 for Exchange Server 2003 Service Pack 2 (SP2). This update includes changes for the United States DST change for the components affected in Microsoft Exchange. It also includesenTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)