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I have just installed 16.04 LTS. However, I cannot update.
$ sudo apt-get update Fetched 34,3 MB in 1h 51min 52s (5.110 B/s) Reading package lists... Done E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/xenial-updates/universe/binary-i386/by-hash/SHA256/e145fc3961ba6091b075afe8b3a89a5f58e1346b7d6cb0a1f4166dfcc3201392 Hash Sum mismatch E: Some index files failed to download. They have been ignored, or old ones used instead.
I tried to many thing, but didn't help. I tried the solutions from Trouble downloading packages list due to a "Hash sum mismatch" error, but it didn't solve the problem.