It seems the igniterealtime.org Jabber server does not allow discovering other Jabber servers’ services. Is there a good reason for this limitation? Or is this just a configuration error?
I would wager a bet that it’s some sort of configration or temporary error. I, for example, could not connect to the weekly open chat on wednesday (and many others said they couldn’t as well) so I would imagine it’s just upset at the moment for whatever reason. Almost sounds like a DNS (caching or flat out lack of communication) issue to me.