Meditation on "Post-Racialism"

I just finished listening to the Slate.com Culture Gabfest podcast and they used a term I have been hearing quite often since Obama's nomination to run for president, "post-racial."
Often times I'll hear the term in close proximity to explanations of white guilt or suggestions of it. In the podcast, they talked about an article written about how whites will be a minority in 40-60 years and how the white population (split into a false dichotomy of NASCAR fans and yuppies) feels only one of two things: anxiety or white guilt. Speaking of white guilt, the podcast was surprisingly bent to the left and its almost as if the personalities were self-congratulatory on this idea of "post-racial" America, a kind of passivity in thinking something righteous is happening.
But isn't the term "post-racial" a euphemism of white guilt in and of itself to simply say "post-white supremacy?" This seems like any other feel-good, PC buzz-phrase, one that will leave lasting impressions on a white electorate that the difficult part is over, now that Obama is in fact president, and they will slide back into apathy.
I don't have any qualms with the term itself. I believe racial categorization is erroneous in that all humans are the same race, technically. This is simple and straight forward. But this is not how the term is being used. It would be nice if the implication of "post-racial" meant that we, as a society, have moved past race. But the mere fact that this term is only used in the context to describe the rise of the minority shows we are still a country obsessed with race, although in a more or less "post-racial" way.