postgis - geoserver wfs insert error

I keep getting an insert error from geoserver when trying to save a point, poly etc etc to my postgis table. any ideas, my code is below

    var Projection = new OpenLayers.Projection("EPSG:4326"); 


    var map = new OpenLayers.Map("Map", {
        //projection: new OpenLayers.Projection("EPSG:900913"),
        displayProjection:Projection,
        controls:[] 
       }
    );

    //add google map
    var GoogleMap = new OpenLayers.Layer.Google(
        "GoogleSatellite",{

            type:G_SATELLITE_MAP,
            isBaseLayer:true,
            sphericalMercator:true,
            maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34, 20037508.34, 20037508.34),
            numZoomLevels: 21  
        } 
    );  

    var NYC = new OpenLayers.Layer.WMS(
      "nyc_buildings - Tiled", "http://soiisdev:8080/geoserver/wms",

        {
            layers: 'cite:nyc_buildings',
            styles: '',
            format: "image/png",
            tiled: 'true',
            transparent: true,
            Projection:Projection 
        },
        {
            buffer: 0,

            displayOutsideMaxExtent: true
        }               
   ); 

   var saveStrategy = new OpenLayers.Strategy.Save({auto:true})

    var vectors = new OpenLayers.Layer.Vector("Vectors", {
        strategies: [
            new OpenLayers.Strategy.BBOX(), 
            saveStrategy

        ],
        Projection:Projection, 
        protocol: new OpenLayers.Protocol.WFS({
            version: "1.1.0", 
            url:  "http://soiisdev:8080/geoserver/wfs",
            featureNS : "http://www.opengeospatial.net/cite", 
            featureType: "nyc_vectors",
            srsName: "EPSG:4326"
        })
    });


    map.addLayers([GoogleMap, NYC, vectors]); 
    //map.zoomToMaxExtent();

    var LonLat = new OpenLayers.LonLat(-73.988113, 40.750898);
    LonLat.transform(Projection, map.getProjectionObject());  
    map.setCenter(LonLat, 15); 

ive checked the header in fiddler and below is the xml sent to geoserver

 
   
     
       -73.986374928559 40.742379645006