fix for http://drupal.org/node/44574

gmap.module

@@ -453,7 +453,7 @@ function _gmap_doheader(){
                  behavior:url(#default#VML);
                }
                </style>
-                <script src="http://maps.google.com/maps?file=api&v=1&key='.variable_get('googlemap_api_key', '').'" type="text/javascript"></script><script src="http://maps.google.com/maps?file=api&v=1&key='.variable_get('googlemap_api_key', '').'" type="text/javascript"></script>
+                <script src="http://maps.google.com/maps?file=api&v=1&key='.variable_get('googlemap_api_key', '').'" type="text/javascript"></script>
                 <script language="javascript">
                  //<![CDATA[
                  var gmap_torun= new Array();