|MadSci Network: Astronomy|
On the surface, this does appear to be a contradiction. As Tye Morancy has already discussed in response to a previous question, the answer may not be as simple as it initially appears, though. Unfortunately, that article refers to a link that is now outdated. You'll want to refer to the latest version of David Ward's essay on the Black Holes and Thermodynamics.
Try the links in the MadSci Library for more information on Astronomy.