Have you updated your devices?
Beginning in 2007, daylight saving time (DST) will be extended in the United States. DST will start on March 11, 2007, which is three weeks earlier than usual, and it will end on November 4, 2007, which is one week later than usual. This results in a new DST period that is four weeks longer than in previous years. Unless certain updates are applied to your computer, the time zone settings for your computer's system clock may be incorrect during this four-week period. In particular, you must make sure that both your Windows operating system and your calendar programs are updated.

Note: This includes your Windows-based computer, calendar program, and mobile device (cell phone, PDA, etc).

Click here to access the Microsoft Daylight Savings Update Guide

Mac users click here

Palm users click here

Curious about what the time change is all about?
Click here to read the history