When upgrading packages

<code>
jessie-amd64)root@sunkan:~# cat /usr/sbin/policy-rc.d 
#!/bin/sh
exit 101
(jessie-amd64)root@sunkan:~# 
</code>

Kill nscd/unscd

Make sure nsswitch only uses local files
<code>
#passwd:         compat ldap [NOTFOUND=return]
passwd:         compat [NOTFOUND=return]
#group:          compat ldap [NOTFOUND=return]
group:          compat [NOTFOUND=return]
</code>