Earlier today the server either crashed or it was rebooted by Hetzner. I still have to investigate, but that is not the point.
The search function was completely broken as a result of this, and I wouldn't have noticed it without a PM reporting it.
So I would like to stress this: If there is an issue with the website, forum or other web services, report them either in by PM, email (email@example.com) or in IRC.
For most immediate feedback, I am usually idling in the IRC.
I am also available there for any other general questions or anything urgent.