[CentOS] fasttrack mirror server out of sync?

I don't know if it's useful to report this: (& who should I report it to?)

# yum update
[...]
  * base: mirrors.ircam.fr
  * extras: mirrors.ircam.fr
  * fasttrack: mirror.ovh.net
  * remi-ff: rpms.famillecollet.com
  * updates: centosq3.centos.org
base | 3.7 kB     00:00
cr | 2.9 kB     00:00
extras | 3.4 kB     00:00
fasttrack | 3.4 kB     00:00
Not using downloaded repomd.xml because it is older than what we have:
   Current   : Thu Jun 20 14:40:52 2013
   Downloaded: Wed Jun 12 13:45:25 2013

To me it looks like mirror.ovh.net isn't sync'ing.

for example:
http://mirror.ovh.net/ftp.centos.org/6.4/updates/x86_64/repodata/repomd.xml is from June the 13th
http://centosq3.centos.org/centos-6/6.4/updates/x86_64/repodata/repomd.xml is from June the 20th (idem for mirrors.ircam.fr)

bye
Patrick