Obama is friends with a terrorist. Singular. Let's get it right!
People that won't vote for Obama because he is Muslim often mean they won't vote for him because he is black. The Muslim thing is just a more socially acceptable form of racism that many cling to. Of course, I'm not talking about anyone here... I first observed this during the primary in a small town north of Harrisburg, PA.
My rule is, if you can state specific reasons to dislike Obama (ideally, that McCain isn't guilty of as well), then I won't assume it. If someone has a general mistrust and vague fear of what Obama would do as president, then I begin to wonder.