munin
From munin-1.2.5-2 we no longer use a random uid/gid, but dedicated ones. Because of this munin service will not start if you have it installed before, so you have to correct this by issuing these commands:
groupmod -g 47 munin usermod -u 47 -g 47 munin chown -R munin:munin /var/lib/munin chown -R munin:munin /var/www/html/munin chown -R munin:munin /var/log/munin chown -R munin:munin /var/run/munin
You should chown any other munin-owned stuff you may have lying around, these are only the default ones.