Dear all,
We have set up a first (alpha) version of Geonetwork opensource with the CSW 2.0.1 implementation based on the ISO application profile. You can find and test the service at:
http://geonetwork.mysdi.org:8081/geonetwork/srv/en/csw
http://geonetwork.mysdi.org:8081/geonetwork/srv/en/csw?request=GetCapabilities&service=http%3A%2F%2Fwww.opengis.net%2Fcat%2Fcsw&acceptVersions=2.0.1&acceptFormats=application%2Fxml
should give you the capabilities document.
Please send any comments, bugs, other issues to the geonetwork-devel@lists.sourceforge.net mailing list.
There’s an issue with the CQL query, so I suggest to not use that one until we announce that issue has been resolved 
Happy testing and thanks to Andrea!
Jeroen
Jeroen Ticheler
FAO-UN
Tel: +39 06 57056041
http://www.fao.org/geonetwork
42.07420°N 12.34343°E