I had the same problem. After too much time researching, I discovered that the problem should be the ISP which I'm using. Changing the internet connection that has another ISP, the problem was solved on trusty and precise! ISP may have a transparent caches and it will break the updates until it updates itself. Researching more, I found this bug: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/972077 that maybe explain what's going on (problem C describes better).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1373598 Title: apt-get update fails, hash sum mismatches (trusty) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1373598/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
