I would disagree.
I voted for Sen. Obama because I believed he was the best candidate with the right agenda for the country coming into the 2008 presidency. It is unfortunate, however, that he's had to deal with so many problematic issues that I don't believe any President has had to deal with since FDR. (Frankly, I think the only reason the country really hasn't bounced back fully is because the opposition hasn't been forced to decide which side of the social/moral issues they truly support, or to put it bluntly "the wealth-class and corporate America or the people-at-large". But I'll save that for another debate where I can articulate my views better and in more detail. As for the point of the thread...)
Certainly I recognized that Sen. Obama was Black, but I believed him to be the most "credible and qualified" Black candidate to come along in a long time since Shirly Chisholm (1972 Democratic Party Nominee)...still do. (Can't stand Jesse Jackson, Sr. but between Chisholm and Obama, that's all most African Americans had to identify with as a "viable" presidential candidate.) So, yes, I support this President. And yes, I think he's made some mistakes. But in the grand scheme of things I give him credit where credit is do and am not too quick to jump on him if "change" or improvements in the overall state of domestic issues doesn't come quickly enough or exactly the way I'd like them to be.
I'm wise enough to know that the President is only the "image" for the country and sets the country's agenda throughout his term. Congress represents the people. And, thus, there is always a "process" to invoke change. And sometimes that process is very slooooow...more often than not it's made that way on purpose due to all sorts of political wrangling that sometimes purposefully bogs down the wheels of progression.