Therefore, I'm reasonably sure that my server has crashed. Until robot_grrl gets home, I won't be able to have anyone attempt to reboot it -- and I hope that is all that it will take. The hard drive is less than 6 months old and that is the most likely failure, so I'm reasonably sure that it will come back.
However, this means that I'm unable to check my private e-mail -- including mailing lists -- or review the recent headlines that my site feeds up to me from RSS feeds.
This wouldn't be so bad, except I'm waiting on automated tests and builds at work and don't have much else to be looking into or at.