title: Google Maps API v3 KML layer from Geoserver doesn't show
body: <p>Trying to load KML from Geoserver 2.1.1 in Google Maps v3. Nothing shows up. Should this URL work (except with our actual domain)?</p>
  
  <pre><code>http://mydomain.org/geoserver/wms/kml?layers=parks_and_recreation:City_Parks_Locations
  </code></pre>
  
  <p>Tried a couple of different layers; same result. I see this response from the Google KmlOverlayService:</p>
  
  <pre><code>_xdc_._7hdyfu &amp;&amp; _xdc_._7hdyfu( [1] )
  </code></pre>