I finally tried a REBOOT, but Ravelry was still down.
So I did the next best thing: I shut down my 'puter, and went out to my family room and KNITTED!
When I returned to my 'puter late this afternoon (14 hours later)
Ravelry was up and running!
I'm going to peek into their NOTICES and see if they speak to a worldwide server problem last night. It was 1:30 am here in my Pacific Time zone, so for anyone east of me, it was even later. Mountain Time: 2:30 am Central Time: 3:30 am Eastern Time 4:30 am.
So how many folks in just these 4 time zones are gonna be taxing the Ravelry server?
Well, of course, even farther east...over the Atlantic, most Ravelers are up, and it's mid morning or mid-day!