It looks like I've lost one of my hard drives at home.
I got a screech, the system rebooted, and when it came back up it didn't even recognize that a drive was there at all.
I'm moderately freaked out. This disk contained, among other things: all of my e-mail storage, all of my Terragen source files, all of my web site files including those for past versions, and the My Documents folder.
My last backup was probably at least a year ago, so I'm probably looking at a pretty substantial loss.
At least I can get my web site files back - they're all on the public server of course.
I'm just starting to look into some of the professional data recovery service companies. They sound pretty expensive though.