If you're behind one of these transparent proxies (I experienced that on the Irish "Three" mobile broadband network) you can use the following command:
aptitude update -o Acquire::http::No-Cache=True -- Upgrade Hash Sum mismatch https://bugs.launchpad.net/bugs/282270 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs