Problem :
root@ubuntu:~# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
default-jre : Depends: default-jre-headless (= 1:1.6-43ubuntu2) b
E: Unmet dependencies. Try using -f.
Fixed :
using following command, force to dist-upgrade
apt-get -o APT::Immediate-Configure=false -f dist-upgrade
