Relevant informations (hardware involved, software version, logs or output…):
http://abf-downloads.openmandriva.org is temporarily down. We apologize for any inconvenience anyone has suffered. People are working on resolving this as soon as possible.
Well something is wrong here, abf-downloads should never be used as repo, but mirrors should be. ABF dowloads already has the strain of three mirrors constantly pulling and syncing content (from Brazil, USA and Russia). It should be used only for archive content or accessing debug repos.
If anyone actually did the workaround described here it is OK to leave things as is. The mirror used in that example (distro.ibiblio.org) has been very reliable and updates frequently.