Questions about some Iraqi war stories

The story that came out of Iraq Friday that six Sunnis were burned alive now is being questioned.
"The U.S. military said Saturday that Iraqi soldiers securing Hurriyah found only one burned mosque and were unable to confirm residents' and police accounts that six Sunni Arabs were dragged from Friday prayers and burned to death."
A blogger is also questioning the identity of a man who is frequently quoted in stories, especially about violence, coming out of Iraq.
I don't believe anyone willfully prints inaccurate information and Iraq has to be the toughest place to report on. It does give pause though about taking everything you read without a critical eye.

UPDATE: Associated Press is standing by their story and will be releasing another one with more detail today.