No, there won't be any serious computer glitches, but you can expect the media to get everyone all hyped up once more, now that a:
...new law will move the start of daylight saving time forward by three weeks and extend it by a total of four weeks. So, for four weeks each year, digital devices that do not account for the changes in DST dates will be off by an hour. (Geek News Central)
Rest assured, any Microsoft operating system made within at least the last decade will definitely be updated to deal with this. Not that it would cause much of a problem for the typical user anyways. So just sit back, relax, and enjoy the news stories about people stocking up on a years worth of canned goods, water, and firewood (don't forget to charge your cellphone for when the power grid fails!).