clipped from: blogs.abcnews.com   
We started covering Sen. Barack Obama's inability to hire good staffers in June 2007, when he blamed staffers for
research trying to link Sen. Hillary Clinton, D-NY, to outsourcing in India
injecting some venom in the David Geffen/Hillary Clinton fight
missing an event with firefighters in New Hampshire
In December, we noted again
answers on a 1996 questionnaire
his touring with "cured" ex-gay gospel singer Donnie McClurkin

Those five buck-passing incidents were apparently not enough.

in 2004
in a questionnaire Obama refrained from denouncing Yasir Arafat
In an e-mail message, Mr. Obama blamed a staff member for the oversight,
In January
Our supporters, our staff get overzealous
In February
asked about an earmark
It did not come through us, through me or Michelle
In a March
questions about Tony Rezko
a form letter of the sort that I did all time. And that I wasn’t, by the way, aware of
I wasn’t a decision maker in any of this process
that's ten instances of Obama publicly blaming his staff