So, the server was getting slow on the weekend. A check of the logs showed that the disk was failing. I filed a ticket with iWeb (our ISP) for them to check it out.
A couple days later (after escalating the ticket and logging in to poke around) they replaced the drive.
The new drive had a fresh OS install, and they connected the drive back to the system so I could recover files from it.
You probably didn’t notice anything other than a few hours of downtime… and everything should be back the way it was. If you’re running into any problems, or find anything missing, just let me know!