Also

* Cisco Systems Inc., the world’s largest marker of equipment to link computers, agreed to pay $80 million for Latitude Communications Inc., a seller of audio and Web conferencing gear, to expand its Internet-based products.

* ChevronTexaco Corp., the second-largest U.S. oil producer, said it would record a charge in the fourth quarter to reflect its share of a loss from the sale of Dynegy Inc.’s Illinois Power utility.

* Japanese game maker Sega Corp. reported a fivefold rise in profit for the fiscal first half as demand held steady for arcade equipment and software titles. Net profit at Tokyo-based Sega reached $54 million for the April-to-September period. Sales dipped 1.8% to $860 million.

* Reliant Resources Inc. said the U.S. attorney in the Southern District of Texas requested information as part of an investigation of energy-price manipulation.

* Edison Schools Inc., the operator of 130 public schools in the U.S., said its shareholders approved a $174-million buyout, which would take the company private.