Infrastructure status is: BAD

lists.rpmfusion.org: Public IP is down - it means we don't have any mailing list working, you may can contact us on IRC (#rpmfusion on freenode)
also mail from bugzilla it's down too, the mx is on the same host as the mailing lists.

cvs.rpmfusion.org: Public IP is down - Meanwhile no kmods have been built, but you may still use the akmods, to build kmods automatically.

for example to install kmods for VirtualBox you may do (as root):

• yum install akmod-VirtualBox kernel-devel
  akmods (kmod is build after install akmod so wait a little please and this command should give you a green OK )
  systemctl restart systemd-modules-load.service
  

for nvidias you have also this page : http://rpmfusion.org/Howto/nVidia#Installing_the_drivers

fas.rpmfusion.org : Also down

UPDATE :
Impacted server is located at OVH (one of our hosting provider).
It seems like OVH decided that the "Kimsufi" servers no longer had any right to open support incidents, and that everything had to go through a public web forum.
As a result, Matthias opened a topic in order to get help there: http://foros.ovh.es/showthread.php?13010-Fallo-de-MAC-virtual-%28120698%29