SAN FRANCISCO — Yahoo Inc. will lay off more than 600 workers after getting off to another bumpy start under a tough-talking new boss who has promised to engineer a long-awaited turnaround at one of the Internet's best-known franchises.

SAN FRANCISCO — Yahoo Inc. will lay off more than 600 workers after getting off to another bumpy start under a tough-talking new boss who has promised to engineer a long-awaited turnaround at one of the Internet's best-known franchises.

Neither the lackluster first-quarter results nor the job cuts announced Tuesday came as a surprise.

Analysts already had predicted Yahoo's three-year slump would worsen during the first three months of the year, and hints about the payroll purge were leaked to the media last week.

This marks Yahoo's third round of mass layoffs in a little over a year, but the first batch since the Sunnyvale-based company hired technology veteran Carol Bartz as its chief executive in January.

Yahoo earned $118 million, or 8 cents per share, during the first three months of the year. That represents a 78 percent drop from net income of $537 million, or 37 cents per share, in the year-ago period.