On a computer that is running Windows Vista, a 6.6.x.x version of the Cdosys.dll file is installed. On this computer, you apply the daylight saving time (DST) updates that are described in the following Microsoft Knowledge Base article:

933360 August 2007 cumulative time zone update for Microsoft Windows operating systems

After you apply these updates, applications that use Collaboration Data Objects (CDO) process the current time in the old version of the local time zone instead of in the updated version of the local time zone. Therefore, the applications may display the incorrect time.

For example, you may expect an e-mail message to have the following time stamp when you send it at 9:37 P.M. on March 11, 2007:

11 March 2007 21:37 (GMT-7)

However, the message displays the following time stamp:

11 March 2007 20:37 (GMT-7)