apt-get update hangs after hit/get

[no]

After typing "sudo apt-get update" the following happens, but then it hangs:
Hit:1 http://us.archive.ubuntu.com/ubuntu xenial InRelease
Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease
Get:3 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease [94.5 kB]
Hit:4 http://dl.google.com/linux/chrome/deb stable Release
Hit:5 http://apt.postgresql.org/pub/repos/apt xenial-pgdg InRelease
Get:6 http://security.ubuntu.com/ubuntu xenial-security InRelease [94.5 kB]
Get:7 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease [92.2 kB]
Hit:9 http://ppa.launchpad.net/neovim-ppa/unstable/ubuntu xenial InRelease
Hit:10 https://deb.nodesource.com/node_6.x xenial InRelease
Fetched 281 kB in 0s (366 kB/s)

Description: Ubuntu 16.04 LTS
Release: 16.04

apt:
  Installed: 1.2.10ubuntu1
  Candidate: 1.2.10ubuntu1
  Version table:
 *** 1.2.10ubuntu1 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: apt 1.2.10ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Thu May 19 21:42:52 2016
InstallationDate: Installed on 2016-04-27 (23 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: apt
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Robert Hooker (sarvatt)]

killing appstream and changing archives apparently fixes it according to the reddit thread