There may be a bug in the --force
Original LP Author: Aurélien Bompard , LP Link: https://bugs.launchpad.net/bugs/1445191
When installing Mailman3 on a new host, a previous start of Mailman had to be killed because of memory issues. After getting more RAM, starting mailman failed with a message that kinda looked like: "these are not the pidfiles you are looking for". It also suggested us to use the --force.
Being rather in the dark (side) about this, we tried. Apparently, we must do it, or do it not, but there is no try. Mailman didn't start this time either.
This felt like a great disturbance in the --force, which may require some investigation.
We hope this is unrelated to the millenium bug in Falcon.