Microsoft Daylight Savings Time (DST) fix - Avoid it for now
Never mind that the U.S. government once again has messed with the space-time continuum by changing when daylight savings time starts and stops (I guess creating daylight savings time in the first place is already messing with temporal mechanics.) Never mind that every device that keeps track of the date and time must be updated. Now, the vendor's of those devices must create fixes. Microsoft has a fix for his. Apparently the Exchange server fix for daylight savings time (DST) is generating quite whole slew of problems. Principally amoung them is that mailbox databases won't mount. Supposedly the problems are under investigation. Hopefully there will be an update for the fix or updated procedures.
My advice is to avoid the DST fix for a few more weeks.