Everything should be back to normal now.
Most of the repos metalinks we fixed last night and we fixed the rest
this morning. We now have tools to find and fix these so if this
happens again we will be much better ready to fix it faster.
http://www.scrye.com/wordpress/nirik/2015/06/20/mirrorlistmetalink-woes-n...
has some general information about the problem, expect a more detailed
post probibly next week.
Sorry for the troubles.
kevin