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There was a horrid set of 3 patches and more that had to be applied to systematically address the DST changes if I recall correctly. Something like (please verify this ordering before using it, this is from memory): 1st) Update MS Server 2nd) Update MS Exchange 3rd) Update Workstation computers 4th) Install and run Time Zone Data Update Tool for Microsoft Office Outlook from each Exchange User Yes, the 4th step is really true and must be run by each user to fix his/her mailbox. The compounding factors come somehow from the way that MS stores it's calendar data and timezone data. The Zone Data Update Tool for Microsoft Office Outlook literally attaches to a user's mailbox and updates all events affected by this time shift. If affected calendar is a Public Folder I forget exactly how these events are updated... Realistically, the easiest way is likely to manually just recreate the events, unless there are a lot of them. A newly created event should track itself right assuming the patches (not the Tool) were previously applied to the system. - Joe Joseph M. Deming Windows System Administrator MATRIX/H-Net 415 Nat Sci Bldg East Lansing, MI 48824 (517) 884-2472 [log in to unmask] -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Lindsay, Joan Sent: Tuesday, March 03, 2009 2:22 PM To: [log in to unmask] Subject: Re: [MSUNAG] exchange calendar We noticed this problem with recurring appointments that were created prior to the 2007 changes to daylight savings time. We resolved the issue by deleting the recurring appointment and re-creating it. When you delete it, you have to select delete the entire series rather than delete one occurrence. After re-creating the recurring appointment, you should notice that the time is correct this week and the time will still be correct after the time change on March 8th. I know it is more of a work-around than a fix, but it is the only thing that worked for us. Hope this helps. Joan ---------------------------------------- Joan Lindsay Library Systems Department Michigan State University -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Oscar Castaneda Sent: Tuesday, March 03, 2009 11:35 AM To: [log in to unmask] Subject: [MSUNAG] exchange calendar MSUNAGers, I run Exchange 2003. I just noticed (not sure when it changed) that a couple of periodical events in the calendar (say, staff meeting every Monday at 10AM) where changed one hour, from 10AM to 11AM. At this point I am not really sure if it was a user input mistake or a Exchange issue. Given the fact that Day Saving Time is about to kick in, I am a little puzzled about this problem. Did anybody had this kind of problem? -- Oscar Castaneda Michigan State University No virus found in this incoming message. Checked by AVG. Version: 7.5.557 / Virus Database: 270.11.6/1981 - Release Date: 3/3/2009 7:25 AM __________ Information from ESET NOD32 Antivirus, version of virus signature database 3905 (20090303) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com