Just a thought...
I had this same error for the first time ever in LFS yesterday and after reading this thread, I *think* I know why it happened to me. (it may help others also)
Running a P4 3.2
Gigabyte mobo
I went into the bios last night, then hit <ctrl>+F1 to get to hidden menu's.
I changed the 'speed' thing (sorry, at work, cant remember exactly what it was) - basically I could choose on/off - with it on there were 5 settings including... slow, fast, race, flat out.. etc...
I turned it 'on' and chose 'race' .
an hour in, LFS crashed.
I will be changing it back to default when I get home.
Hope this helps someone.