I'm using xubuntu 12.04, and I notice that periodically, the permissions
on some device special files are changed. For instance, if I manually
change the permissions on /dev/sdc to 666, they will eventually get
changed back to 660. How do I disable this behavior? I looked around
in the various cron-related configuration files under /etc, and also in the
scripts in /etc/init.d, and didn't see anything that looked like it might be
changing permissions in /dev.