In the past 24 hours we fixed our publish/subscribe service (turns out, there is a bug in ejabberd 2.1.0, see EJAB-1115). Also, due to a missing wildcard DNS-entry, the VCARD and Publish/Subscribe service were not available for users from other jabber-servers. Both problems are fixed now, by the power of erlang/ejabberd, this was possible without any downtime for the users.