That is an old story: if FFS crashes AND the problematic file is on 6th or more level of directory structure, the revalidating process is unable to repair the partition.
6th level means something like:
DH1:News/journal/classifieds/cars/gm/camaro/problematicFile.{bleep}
That's an UNDOCUMENTED:-o problem of FFS, please, don't ask for the fonts.
