I got a notice from my host that they need to do some upgrades over the next few weeks. Because they are doing it in batches, this site will get hit at some point, but they don't have a precise estimate for me regarding the exact time. There are ways to keep up time in spite of single server going down, but I figure it's not the end of the world regardless.

The window is kind of long for this sort of thing. 10-25 minutes. But it could be longer.

The point is, don't freak out.