After installing Ubuntu 12.04 I was trying to install Kile as to write .tex file . But this message showing after attempting install Kile and updates:
W:Failed to fetch gzip:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_precise-security_restricted_binary-i386_Packages Hash Sum mismatch , E:Some index files failed to download. They have been ignored, or old ones used instead
Now I can't install software. What can I do now?
sudo add-apt-repository ppa:kile/stable,sudo apt-get update,sudo apt-get upgradeand see if that fixes your issue! – Thanos Dec 31 '12 at 19:23