"We have uncovered a minor issue related to an internal log viewing application using an embedded [Sun Microsystems Inc.] JRE (Java Runtime Environment) version, which was not detected during the planning and testing," said Michael Leonhardt, an infrastructure architect for San Francisco-based building services and materials company, Building Materials Holding Corp. "Other than that, everything went smoothly."

IT workers at the company will continue to monitor systems through the rest of the weekend to be sure no other problems pop up, he said.

"If the situation does pass without major issues, the success should be wholly attributed to our IT teams," Leonhardt said. "Despite the lack of research and planning by the U.S. government in concert with the delays of obtaining patches from vendors, we are cautiously optimistic and have not yet seen any major internal issues arise due to the time change."

The efforts to get IT systems into compliance for the earlier DST change this year were significant, Leonhardt said, and certainly took their toll. "It is unfortunate [that ] IT was required to stop work on business initiatives and projects to divert the necessary resources to deal with this reckless change. The costs to businesses associated with handling this change will probably never be recovered."

Online 24-hour auction house uBid.com, which relies on correct time stamps for its thousands of daily online auctions and buy-it-now sales, experienced no IT-related problems this morning.