>I don't understand what you mean by "stability".  FFS with soft updates is
>exactly like normal FFS in terms of failure recovery, it just reduces
>synchronous write overhead while the filesystem is running.

In normal FFS, ordering restrictions are only imposed on the meta-data
associated with a file, not its data.  With soft udpates, you are 
also guaranteed that metadata will point to valid (filled) data blocks.

>LFS will at least let you boot your system faster,

Soft updates gives you this as well since all you need to perhaps
add a few blocks back into the free block bitmaps and this can be
done in the background at boot or at some regular maintenance
interval.

Because of these features, the value of LFS over FFS is marginalized.

--
Justin