after migration - named high cpu usage

IMSCP: 1.1.18
Debain Wheezy
PHP (fcgid) PHP 5.4.35

after a migration to a new server I have a high cpu load from named:

any idea?

## edit ##

fixed
something went wrong while installing other stuff ...
managed-keys.bind in /var/cache/bind was owned by munin:munin
I set it back to owner bind:bind