I have found the most likely cause of this bug to be, Travel. I went from Europe to the United States and the problem started. By changing my software source to a US Server through select best, the problem was solved and headers were retrieved properly. So Change your sources to a near by server.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/780036 Title: update-manager Error:ouverture du cache To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/780036/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
