This looks like an easy problem. get a recent version of ns_cache. nscache has the syntax
ns_cache names cachename ?pattern?
since a couple of ... years (?). Get a recent version of nscache
cvs -z3 -d:pserver:mailto:anonymous@aolserver.cvs.sourceforge.net:/cvsroot/aolserver co nscache
seems, as if xowiki exercises some oacs componens more than other packages....
-gustaf