[GRASSLIST:5884] NVIZ on Fedora GRASS6beta1

Hi all!
I've recently compiled GRASS6beta1 in a FEDORA linux box, and found this
problem while trying to run nviz:

GRASS 6.0.0beta1:~ > nviz -q
libGL warning: 3D driver claims to not support visual 0x24
libGL warning: 3D driver claims to not support visual 0x28
libGL warning: 3D driver claims to not support visual 0x2c
libGL warning: 3D driver claims to not support visual 0x30
Segmentation fault

Any ideas? Should I install fresh MESA GL libraries?

Thanks a lot

Javier