Well, just when you thought you knew who all was in the family tree, along come these guys to shake it up for you.  Now, before I get started, I just want everyone to realize that the ONLY reason this happens, is because science has a tradition of questioning what it thinks it knows. 

Jeffrey Schwartz and John Grehan analyzed dozens of traits shared and not shared between several apes, including chimps and gorillas, orangutans, humans, and early hominoids, notably Australopithecus.  What they found was that, according to their study, the ancestor we share with orangutans likely lived much later than one we shared with chimps. 

Here is the full article, as I know I won't be doing it justice.  The thing that caught my eye, since I enjoyed the molecular biology section in my ap bio class, is the researchers pointing out that there is no legitimate justification for putting more emphasis on gene analysis than on morphological analysis, and they're right.  It's just another tool.

And if you're a creationist reading this, please remember that you are welcome to post a comment, but no drivel.