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[ConfigMgr] SP1 KB 959257 - Recurring advertisements or maintenance windows start to run an…

Full Title: Recurring advertisements or maintenance windows start to run an hour later or earlier than expected when the time is changed because of DST in System Center Configuration Manager 2007 Service Pack 1

IMPORTANT: This KB applies to ConfigMgr SP1. The other KB with the SAME title (956259) applies to RTM. If you need to apply this hotfix please make sure you apply the correct version for the version of ConfigMgr you are running.

SYMPTOMS

Consider the following scenarios:

• You define recurring advertisements or maintenance windows in Microsoft System Center Configuration Manager 2007 Service Pack 1 (SP1) to run on a schedule before daylight saving time (DST) changes occur. Then, DST changes occur.
  In this scenario, the recurring advertisements or maintenance windows start to run or execute an hour later than expected.
  
• You define recurring advertisements or maintenance windows in System Center Configuration Manager 2007 SP1 to run on a schedule when DST changes occur. Then, DST changes do not occur.
  In this scenario, the recurring advertisements or maintenance windows start to run or execute an hour earlier than expected.

http://support.microsoft.com/default.aspx?scid=kb;en-us;959257

Read the complete post at http://wmug.co.uk/blogs/cliffs_blog/archive/2009/02/17/configmgr-sp1-kb-959257-recurring-advertisements-or-maintenance-windows-start-to-run-an.aspx