After the history purge of all public rooms we did last night we are planning to re-gain some disk space to see what the overall gain has been. For that we need to run a full vacuum on the database. To be on safe side since the tables will be locked for the time of the vacuum we will put the matrix server down. This operation might take few hours (hopefully not as long as last 24hours downtime), however it might be, so be patient.
Treat it like new campaign: Fight for fresh air, go out of the house, "Matrix free day" type'o thing :P