XO's cannot use mirror repo's in YUM update or install

[Carrol Riddle]

XO's attempting to run YUM update or install are unable to use fedora mirror sites (https://) but able to use primary fedora site (http://).

Is this a matter of https vs http / ca-certificates or changes in mirror structures ?  Ca-certificates update have not been done, but could be done.

 Running OLPC 13.2.10 with current date / time and hwclock -w to sync.  

Primaries used by editing /etc/yum.repos.d/fedora.repo and commenting out mirrorlist line and uncommenting baseurl line (and adding "archive" to url path after /pub/).

There are no entries in yum.log and error message is:
"Cannot retrieve metalink for repository: fedora/18/i386.  Please verify its path and try again."

My specific case is trying to install rpmfusion in preparing to install exfat-utils and fuse-exfat ,  but occurs with other installs that have been done in the past.

Carrol Riddle
ebox382 at scishare.com