Starting from 03/26 I can't download the updates, seems that the mirrors
(including the main fedora download site) are missing the update files.
I have already cleared both dbcache and metdata, changed mirror to be sure that
it wasn't a propagation delay (actually I'm using download.fedora.redhat.com).
The updates annouced on 03/26 and today 03/28 are missing.
reassigning to the distribution and closing, as per Jesse's suggestion