Greetings:

In the most recent past, I have used:
http://download.fedora.redhat.com/pub/fedora/linux/development/17/x86_64/os as my baseurl in /etc/yum.repos.d/fedora.repo

Today, I can't  find the server...

Did the url disappear or is it just temporarily down???

--
Sincerely yours,
Rob G. Healey