Index: C:/MyProjects/Geotools/trunk/modules/unsupported/jdbc-ng/jdbc-postgis/src/main/java/org/geotools/data/postgis/PostGISDialect.java
===================================================================
--- C:/MyProjects/Geotools/trunk/modules/unsupported/jdbc-ng/jdbc-postgis/src/main/java/org/geotools/data/postgis/PostGISDialect.java	(revision 33003)
+++ C:/MyProjects/Geotools/trunk/modules/unsupported/jdbc-ng/jdbc-postgis/src/main/java/org/geotools/data/postgis/PostGISDialect.java	(working copy)
@@ -91,7 +91,7 @@
 
     boolean looseBBOXEnabled = false;
 
-    boolean estimatedExtentsEnabled = false;
+    boolean estimatedExtentsEnabled = true;
 
     public boolean isLooseBBOXEnabled() {
         return looseBBOXEnabled;
@@ -163,13 +163,16 @@
     @Override
     public void encodeGeometryEnvelope(String tableName, String geometryColumn,
             StringBuffer sql) {
+		LOGGER.fine("Estimated Extend Enabled " + estimatedExtentsEnabled);
         if (estimatedExtentsEnabled) {
-            sql.append("estimated_extent(");
-            sql.append("'" + tableName + "','" + geometryColumn + "'))));");
+            sql.append("AsText(force_2d(envelope(estimated_extent(");
+            sql.append("'" + tableName + "','" + geometryColumn + "'))))");
         } else {
             sql.append("AsText(force_2d(Envelope(");
             sql.append("Extent(\"" + geometryColumn + "\"))))");
         }
+		
+		
     }
 
     @Override