Waking up, feeling like I have a cold I sit down at my computer and see that my biggest client has asked for a minor change. I haven't had my coffee yet, but I can do what they're asking for in a minute. The site is *gone*. Just a permissions error. Have they been hacked?! Why hasn't the client called me?! The files are there and no changes have been made. It doesn't come up on any browser. 10 panicked minutes later I check it on my phone. It comes up. Wait a minute ... While editing /etc/hosts yesterday I'd accidentally uncommented a line for this site that I'd foolishly left in there. One character later my false alarm is solved. I'm getting my damned coffee now.