Brian Keane, son of company founder and chairman John Keane Sr., had served as CEO since 1999 and president since 2000, but resigned last May following sexual harassment allegations.

The company settled the charges and appointed a three-man Office of the President during the search for Keane’s replacement.

Then in October, the company announced it had fired Richard Garnick, president of the company’s North American and global business lines and the a member of the interim leadership team, for violating its policy on travel expenses and unauthorized communications.

In addition to all the unanswered questions as to what exactly Garnick and Brian Keane did or were alleged to have done, the company posted a disappointing third quarter in 2006, with sales and profits coming in under expectations.

Arnold come comes to the job from Fidelity, where she was executive vice president of HR outsourcing. Before that she was CEO and president of NerveWire Inc, a services firm she helped start in 2000. Previously she spent six years as president of CSC’s consulting business.

John Leahy, who has also part of the Office of the President and has served as interim CEO and president since May, will return to his full-time gig as CFO of Keane.