From the New York Times:
Two years ago, when Congress passed a law to extend daylight saving time by a month, the move seemed a harmless step that would let the nation burn a little less fossil fuel and enjoy a bit more sunshine.
Representative Fred Upton, a Michigan Republican, predicted that children would rejoice at the prospect of an extra hour of daylight trick-or-treating on Halloween. But there is no rejoicing among corporate technology managers.
The change takes effect Sunday, as daylight saving time begins three weeks earlier (and ends a week later, on the first Sunday in November). And many companies are scrambling to reset BlackBerry e-mail devices, desktop PCs and big data-center computers used to automate payrolls, purchasing and manufacturing.