> > See http://greta.pica.nl:1080/sru/

I can't seem to get to that server to try it out myself, but...

> > <?xml version="1.0" encoding="iso-8859-1" ?>
> > <explain id="OCLC PICA Test" authoritative="true">
> >   <serverInfo protocol="sru" version="1.0">
> >     <host>greta.pica.nl</host>
> >     <port>1080</port>
> >     <database>/sru/</database>
> >   </serverInfo>
> >   <!-- ... -->
> > </explain>

This is just plain wrong.  It is not an explainResponse, it is a bare
Explain record.  And, as has been pointed out, it isn't even a good
Explain record, as it is missing its namespace declaration.

Ralph