Today's Honolulu Advertiser has a profile on Madelyn Dunham, Barack Obama's maternal grandmother who he referred to in his March 18 A More Perfect Union address:
... a woman who helped raise me, a woman who sacrificed again and again for me, a woman who loves me as much as she loves anything in this world, but a woman who once confessed her fear of black men who passed by her on the street, and who on more than one occasion has uttered racial or ethnic stereotypes that made me cringe.
One main focus of the story is on her being a pioneer for women in the banking industry: "In December 1970, she was named one of the first two female vice presidents at Bank of Hawaii." This was a big deal at the time. She is a very strong woman and those who worked for her obviously have huge respect for her.
One indicates that he never heard her say "anything like that." But it also recounts one anecdote from Dreams from My Father where Barack's grandfather told him she had been scared of a man on the street because he was black.
Rather than pull out some block quotes, I encourage you to read the whole thing. There's nothing earth shattering in it, but it does shed some more light on this woman who helped raise Obama (who wanted to be interviewed for the story "but declined because it would be unfair to other media who have made requests"), as well as the atmosphere of racial and ethnic attitudes in 1960s and 70s Hawaii in which he was raised.
Update: another diary on the subject by Keone Michaels who beat me to it, but same basic idea...