I'm curious what specific issue Apple has with GPLv3 for something like bash? It seems to me that if they're providing the source, and not modifying the copyright/license, there would be no issue. The patent language only applies to the program itself. I guess one could view it as simple paranoia on the part of their lawyers...they took years to start shipping any GPL (v2) code on the Mac. It's actually news to me that it has bash out of the box, now; last time I used Mac OS X, it still had tcsh and an abominable development environment and I hated it.
