I looked at https://www.wikidata.org/wiki/Q42 and refreshed the page several times. I noticed that sometimes properties like VIAF are linked to their counterpart on a external dataset and sometimes it is only the the raw text without link.
As aude pointed out it may be something with the gadget initialisation. I have, however, no knowledge about the internals, so I dump here a copy of the irc log - hope this helps:
OS X 10.10