Everyone has been generating a giant ballyhoo about a 2005 law that decreed daylight-saving time would start three weeks earlier and end one week later, beginning this year. Congress passed the law after deciding that an early evening daylight would translate into energy savings, but geeks everywhere are worried that software created earlier is set to automatically advance its timekeeping by one hour on the first Sunday in April, not the second Sunday in March. Is this the new Y2K? Not likely. As we all know, nothing happened with the dreaded Y2K bug, but that doesn't mean nothing will happen this time either. It seems computer clocks set to change at the traditional daylight savings time will all be an hour off.
According to the AP, the problem won't show up only in computers, of course. It will affect plenty of non-networked devices that store the time and automatically adjust for daylight saving, like some digital watches and clocks. What can you do to prevent this? read more
For more resources, check out Techie Diva's Early Daylight Savings Guide