They're doing some maintenance on some code changes.
Yes maxendonna, it's for real. It was a pain earlier, but is now fixed

(I guess now I can type the password in my sleep

)
I guess that was all the scheduled and unscheduled downtime was about. I caught most of my main work on the site - such as purchasing email - before the maintenace screen came back.
One good thing, it's much faster. And looks like they have 3 times more members on at the same time! Wow!
Yes, the downtime has been inconvienent, but the improvement to the site has been noticable. You can have your cake and eat it too - but you still have to watch out for those calories!