NM - I got it working.
I am trying to set up a chrooted mysql server. Whenever I try:
chroot /chroot /.../mysqld_safe --user=id
and it shuts downCode:
chown: `id': invalid user
It looks like it can't find passwd, etc, files, but they are there, w/ permissions set correctly.
I can run the server non-chrooted (as --user-id) just fine.