Daylight Savings Time for 2008 will end on Nov ‘2nd. This is a reminder to those who’ve not applied their DST patches to the SBS 2003 network to do so as soon as possible.  Common issues that are fixed by these patches include:

1. Calendar items and appointments in Outlook are off by an hour
2. Timestamps in OWA are off by an hour
3. Time skews between patched and un-patched machines
4. Date and Time fields are off by an hour in Sharepoint
5. SQL Server notifications are delayed

Full list of updates

There are several methods to check for these updates, including:

1. Use the official Microsoft Daylight Savings Time Help Center
2. Run the SBS 2003 Best Practices Analyzer
3. To check the OS only (client or server) run the "w32tm /tz" command.

More info: DST and the DST changes