Courbe said his team at BearingPoint fixed the daylight-saving rules on 25,000 servers for its customers before the changeover and ended up with just a dozen "causing trouble." Usually those were in older programs, he said.
...some financial networks require that multiple machines coordinate, and an errant computer could screw it up. That's why the New York Stock Exchange and the Nasdaq Stock Market ran tests Sunday before pronouncing their systems fit for Monday's trading sessions.
At NetTeks Technology Consultants Inc. in Boston, founder Ethan Simmons said the phones were "ringing off the hook" with problem reports, including some in automated communications systems. In a few instances, a company's network was an hour late in releasing calls to customer-support staff at the opening of business, leaving the "agents sitting around twiddling their thumbs," Simmons said.