> ext3/ext4 are solid fs, and have
> always been. the lost+found folder is a remainder of the ext2 era, and
> is not even mandatory any more, AFAIU.

lost+found is required since ext3+ext4 permit mounting as ext2, which requires it. A poor reason, perhaps, but put differently getting rid of a single directory would be a poor reason to remove that little bit of functionality.

Arnt