My Acer C720 running Ubuntu has never given me any trouble — it’s just been a terminal netbook for configuring switches and servers. But recently I figured it’d been a while since I updated, so I got the itch and ran an update. Which is when I hit this. “The file list of package XXX contains an empty filename” No idea why this happens. From poking around some Debian docs, it’s probably from a flaky connection pulling down an incomplete package or list and then force-installing it.