Last night K wanted her username changed. Mercifully, she only exists on 3 of our systems. Still, it sucked a good deal.
In a follow-up action, I sat down today to migrate courier-imap to authpgsql from authmysql. To my delight, the Debian packages for courier work very nicely now, so I migrated away from compiling that by hand as well.
Now only $gs and jcn are still talking to mysql, and one of my goals for today is to get $gs migrated so that we can start USING it again.