Apparmor prevent by broken Security Profile read Access to Configs of WICD
Syslog dmesg Log:
apparmor="DENIED" name="/var/lib/wicd/dhclient.conf"....
Solution:
sudo nano /etc/apparmor.d/sbin.dhclient
add after „/etc/dhcp/** r,“:
/var/lib/wicd/dhclient.conf r,
to enable access to /var/lib/wicd/dhclient.conf which is able to read updates