I happened to get this in my e-mail inbox:
Your server experienced a service failure recently resulting in the need for us to perform a reboot. As a result, we are scheduling maintenance to perform a manual file system check (FSCK) between the hours of 12am and 2am CT tonight to ensure there is not data corruption on the hard drives. We do not anticipate this taking more than a couple hours barring major problems being detected by the FSCK.
If you have any questions regarding this email, please contact Technical Support via the Support tab in Backstage.
Best Regards,
The Site5 Team
Ah, the joys of shared hosting. 🙄
Funny thing is, I never knew it went down. 😛