thanks, lookd like the compiler guys were again busy with implementing new stupid warnings.
I remember that some time ago gcc would complain the other way around (when
"using namespace std" was missing as opposed to being present).
But on Mac OS X, the default compiler is clang, so I guess it could be true.
This one might actually haunt us for a while because there are many
"using namespace std" in the GNU APL code.
Strange, because that is the only warning I got out of all the compiles. Maybe you were doing something a little different in Quad_XML.cc
I also fixed the other warning, SVN 1405.