Code:
server-wodan:/var/log/munin# munin-run --debug
DEBUG: Skipping "Debian-exim" (optional).
Saving mysql*->env->mysqlopts = --defaults-extra-file=/etc/mysql/debian.cnf...
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
Use of uninitialized value in concatenation (.) or string at /usr/sbin/munin-run line 321.
ERROR: Could not execute plugin (plugin doesn't exist?).