Since I didn't get a chance to blog about this back during the start date in Spring, I thought I would mark this end date instead. So by today, you will have your time rolled up an hour. Are your servers aware of that the time has changed? :)
They should according to February 2007 windows update. For those who may have somehow missed these the first time around, there is a Microsoft Daylight Savings Time Help and Support site at: http://support.microsoft.com/gp/cp_dst.
Application Developers who missed these the first time around for the most part need not be in panic mode as most rely on the operating system updates. Those that outliers will have had checked out: http://msdn2.microsoft.com/en-us/vstudio/bb264729.aspx.
As a mini extension to this, you may have noticed that your event log messages are rolled back an hour. So if you previously saw the messages before Nov 4 as 6PM, they will now show at 5PM. So if you have logs that go both to an event log and a file log, you'll see that they don't match up time wise despite having identical messages. Ideally, it would have been nice for the server to maintain the consistency of the event log message timestamps.