I was surprised to find both APS and
www.abriefepisode.com (shameless plug) were both hosted on Geovario. Anyhoo, here is their reply:
Hello,
Thank you for your support call via the voicemail you left.
We have now resolved the issue - as you noted this affected several sites hosted by us; each affected site - started showing a default error page.
Additionally we have traced this issue to a daily cronjob from one of our software vendors - and we have opened a ticket with them to determine next steps to prevent this from happening again.
-Team GeoVario Support