Mr. Lazaridis' departure comes after he and longtime co-CEO Jim Balsillie stepped down as co-chiefs of the company early last year.
His longstanding role as a non-executive director at British American Tobacco - from which he stepped down in 2008 - often attracted fierce criticism.
From public scandal -- she stepped down as the first black Miss America after nude photos of her appeared in Penthouse magazine -- to Broadway triumph, Williams has been on the celebrity radar for decades.
The news comes only two days after James Murdoch -- the son of media magnate Rupert Murdoch -- stepped down as chairman of satellite broadcaster BSkyB, which owns Sky News, part of the News Corp. empire.
And I said to Gordon when I stepped down - and incidentally we had a very good relationship at that time and beyond - that I would not pass comment on anything that was happening and that would stop people misrepresenting us.
Security has deteriorated on the Yemeni side after its long-term president stepped down in 2012, Saudi border official Lt Col Hamed al-Ahmari said.
Rosenthal, who became CEO after co-founder Gina Bianchini stepped down, is a longtime friend of Ning co-founder and Netscape co-founder and now venture capitalist Marc Andreessen.
The EU has been trying to re-establish a full political dialogue with Havana ever since Fidel Castro effectively stepped down due to ill-health in July 2006, correspondents say.
Title-winning captain Dale Benkenstein stepped down as skipper, to be replaced by Will Smith - while at the other end of the country, an era has ended with long-serving captain Chris Adams leaving Sussex to become cricket manager at neighbours Surrey.
Knott-Craig stepped down as CEO in October 2012, citing a difference of opinion with shareholders.
The 61-year-old stepped down as world champion Lewis Hamilton's team boss on 16 January, but stayed involved in F1.
Despite his initial resistance, Lee Teng-hui stepped down as party chairman on March 24, nearly two years before term.
The 85-year-old stepped down last month, saying he was no longer strong enough to lead the Church, which is beset by problems ranging from a worldwide scandal over child sex abuse to allegations of corruption at the Vatican Bank.
The 66-year-old originally agreed to replace Lee Strafford, who stepped down in May, on a short-term basis.
They stepped down as co-CEOs last year, replaced by a little known company insider.
FORBES: Both BlackBerry Founders Are Gone Now. Could Either Become A Billionaire Again?
Mr Guttenberg eventually stepped down in March - a decision he called "the most painful step of my life".
Last month the company's co-chief executives stepped down amid faltering sales figures.
It comes 15 months after he stepped down as co-CEO of BlackBerry.
Although rumor had her pushed aside when she stepped down as editor-in-chief in 1997, she stayed on as Cosmopolitan's international editor and remained a revered figure at Hearst.
He stepped down as co-chief executive in January and spends much of his time in Austria, where his wife, a fundraiser for George W. Bush, is U.S. ambassador.
He stepped down from day-to-day duties at bea in 2001, just as tech was settling into its long slide, and was hanging out in Aspen but looking to start another company.
Mr Campbell was a key adviser to Tony Blair in opposition and was No 10 director of communications and strategy between 1997 and 2003 - when he stepped down from the role.
The 85-year-old Benedict stepped down last month, saying he was no longer strong enough to lead the Church, which is beset by problems ranging from a worldwide scandal over child sex abuse to allegations of corruption at the Vatican Bank.
BBC: Rome conclave: Cardinals fail to elect pope in first vote
Charlton began the season with Iain Dowie in charge after Alan Curbishley stepped down following a 15-year spell at the club.
He took over in January, after Mr Lazaridis and his co-CEO Jim Balsillie stepped down, battered by the crisis at the Blackberry company which probably explained the tensions of our interview the previous spring.
In 1981, when he was sixty-five, he voluntarily stepped down as news anchor.
But instead it has only underlined how little may have changed: Daniel Noa, Siemens' top anti-corruption official, has stepped down after only six months at the company, with little explanation given.
In the past week, Gary Speed has stepped down as Bolton's first-team coach.
The political head of UNAMID, Rodolphe Adada, a bow-tied Congolese diplomat who also stepped down last week, has been largely ineffective.
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