For people keeping score at home, it is now more than a year since a lot of this original posting. I have a brand-new Intel 320 SSD with the latest firmware (later than the firmware indicated in Intel's SSD tools) and, sure enough, it's an 8MB brick right now.
Yes, this was being used on a laptop-- and a sudden power-down (overheat) seems to be what started the issue. After several rounds of trying to repair damage (Windows indicating corrupt files-- running standard disk tools, none of which indicated any kind of issue with the disk or filesystem), I suddenly got "Disk not found."
This is a brand new laptop (just a few weeks old), so I was still in the process of building it all up when this happened and did not have full backups.
For the record, the drive performed amazingly. Windows boots are so fast, they look like they were enhanced for a commercial or movie. Sadly, it's a little like saying "Other than that, Mrs. Lincoln, how did you enjoy the play?"