The [Indefero|http://indefero.net] SSL certificate expires today, it will be renewed during the afternoon, normally the update is performed without downtime. If downtime, it should a couple of seconds the time to restart the web server.
Update 2012.07.30 11:30 UTC: The renewal procedure is on the way, it should be finished in a couple of hours to have the real update at the server level done just afterwards.
Update 2012.07.31 07:40 UTC: The certificates are now updated and valid for another year.