It looks like the RPMFusion distribution of the drivers has fixed this problem in the version in updates-testing. Looks like they rebuilt some of the binaries from source.
* Tue Nov 24 2009 Nicolas Chauvet <email@example.com> - 190.42-4
- Use nvidia-xconfig and nvidia-settings built from sources.
* Sat Nov 14 2009 Nicolas Chauvet <firstname.lastname@example.org> - 190.42-3
- Remove execstack on nvidia binaries and libraries.