[NTG-context] permissions in luatex-cache

Hello, What directories in luatex-cache should be world writable? It seems to me, at least some sub-dirs in $TEXMFCACHE/luatex-cache/context/XXX/fonts And do these world writable directories present any security risk? (For example: user A writes some evil code into file $TEXMFCACHE/luatex-cache/context/XXX/fonts/otf/file.otf that makes user B remove all his files when running "texexec --luatex document.tex") Cheers, Peter -- http://pmrb.free.fr/contact/