Had a massive motherboard failure on my box, which was essentially a desktop machine crammed into a 4-u rack mount chassis. I originally thought the power supply was dead, but when I replaced the unit, the machine still wouldn't start. Turned out the board was completely fried, though not the fault of the hosting provider, I assume, despite the fact that a number of servers in the same cabinet are stricken with a tendency to all crash simultaneously.
So, to keep the site up, at least in a zombie state (with no updates since December), I piggy-backed the whole shebang on another nearby server which has had no crashes in the last year.
I've also found another, this time more professional, server: a gently-used IBM x345 box with several built-in redundancies, which should keep the websites going fine.
I'm still working through some configuration twists and turns, but we should be back to normal in a little while.
I've been online for better than 10 years now, so it's safe to assume I'm here for the foreseeable future.