CNN.com/live said it broke its all-time live video-streaming traffic record for a single day.

"Traffic is completely through the roof," a CNN spokeswoman said. At 6 p.m. Eastern, the spokeswoman said the Web site had generated 160 million page views, with 25 million live video streams for the 12 hours between 6 a.m. and 6 p.m. That beat CNN's previous video stream record of 5.3 million live video streams for Election Day last November, she said. Also, 1.3 million live concurrent streams were served in the critical moments between Obama's taking the oath of office, and his inaugural address.

Wireless carriers also a reported a record number of cell phone calls during the inaugural ceremony.

Some news sites encountered performance slowdowns while broadcasting live pictures, video and blogs of the inauguration, said, director of operations at , a mobile and Internet test and measurement company in San Mateo, Calif.

Web sites of many TV networks, including ABC, CBS, Fox Business and MSNBC, as well as the Web sites of National Public Radio, USA Today and the Wall Street Journal experienced significant performance slowdowns prior to and during the inauguration ceremony, White said in an e-mail.