Goodness only knows! There used, on an acheological time scale - i.e. 15 - 20 years ago, to be a system called cops-1.0.4+ which, amongst other things, tightend up the permissions in the system directories. I seem to vaguely remember a version for Linux. Try using 'cops 1.04' as a Google search term. Note it's all _very_ acheological and I offer no guarantees whatsoever.
Advise about re-building your cache is not my forte so you'll have to look elsewhere for that. -- Sincerely etc. Christopher Sawtell
