For me I am doing double booting ubuntu with windows 8,so I went to windows 8 and turn off fast boot.
http://itsfoss.com/solve-ntfs-mount-problem-ubuntu-windows-8-dual-boot/
sudo rm /var/lib/apt/lists/* -vf
sudo apt-get update
Found this solution in
http://ubuntuforums.org/showthread.php?t=1986288