Is Osama bin Laden still alive?

CNN has just announced that France has authenticated a tape the French government has received from a man claiming to bin Laden. Yet there is speculation that bin Laden has been dead for some time and some sources even claim proof This is one:

“Benazir Bhutto, who was killed in a suicide attack at the end of 2007 stated that Osama bin Laden, the head of the international terrorist network al-Qaida, had been killed. Bhutto even named the man who had killed the prime suspect of 9/11 terrorist attacks in the USA. According to Bhutto, Bin Laden was killed by Ahmed Omar Saeed Sheikh – one of those convicted of kidnapping and killing U.S. journalist Daniel Pearl.

Bhutto released that statement on November 2, 2007 in an interview with Al-Jazeera TV channel. Bhutto spoke in English in the program titled Frost Over the World. However, no one paid any attention to her words. Speaking about the enemies, who did not wish to see her back in Pakistan, she said: “Omar Sheikh is the man who murdered Osama bin Laden.”
The video of Bhutto’s interview to Al-Jazeera can be found on YouTube. There was no official who commented on the information. Not a word was said from the CIA and the FBI. They did not even lift a finger to reject it. Absolute silence. But the U.S. administration promised a reward of 25 million dollars for Bin Laden’s body, dead or alive.

Seven weeks later, Benazir Bhutto was dead. She cannot say anything about her sources of information.”
(source: http://www.freerepublic.com/focus/f-news/1954392/posts )

What do you think, dead or alive?