Symptoms: apt-get update hangs, and the appstreamcli process is using 100% CPU. Fix described here: https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/15

Symptoms: apt-get update hangs, and the appstreamcli process is using 100% CPU. Fix described here: https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/1579712/comments/24 https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/157...