Comment 2 for bug 159459

Pandion is using jabber:iq:avatar protocol which is deferred according to xmpp.org.
It is not even in the default listing there. However, the support is there, just edit as:

    # Use a priority order if we have hash from both.
    variable protocolPrio {vcard avatar}
    #variable protocolPrio {vcard}

and then you will get it. But, the avatar I get from Pandion has no mime type set so it is hard for the image handlers to figure out what to do. Fact is that it succeeds but somehow it is not displayed.