Phoronix: Ageia's PhysX Delaying UT3 For Linux?

Last week Ryan "Icculus" Gordon had confirmed that the Linux client and server ports of Unreal Tournament 3 were caught up in a legal issue regarding some middleware used in this latest PC title from Epic Games. However, what is the middleware that Unreal Tournament 3 is caught up in? There is a strong possibility that it deals with the PhysX licensing from Ageia Technologies.

http://www.phoronix.com/vr.php?view=11496