Dynamics CRM Engineering Team has released DST fixes to align Microsoft Dynamics CRM application with the windows cumulative time zone update discussed in the following article:

http://support.microsoft.com/kb/2863058/en

Currently there is a fix available for Dynamics CRM 4.0, to receive this fix please log a support incident with the Microsoft Dynamics CRM support Team.

2936902                Daylight saving time (DST) fix for Microsoft Dynamics CRM 4.0 with Update Rollup 21

http://support.microsoft.com/kb/2936902/EN-US

The fix for Microsoft Dynamics CRM 2011 will be included within the next Update Rollup release, which will be Update Rollup 17.

Best Regards

Dynamics CRM Support Team