Mine

Index: __init__.py
===================================================================
--- __init__.py	(revision 7440)
+++ __init__.py	(working copy)
@@ -28,9 +28,8 @@
 # Kick off handler registration
 from Products.Marshall import handlers
 
-if config.hasLibxml2:
-    # Kick off namespace registration
-    from Products.Marshall import namespaces
+# Kick off namespace registration
+from Products.Marshall import namespaces
 
 from Products.Marshall.marshaller import ControlledMarshaller
 
Index: handlers/__init__.py
===================================================================
--- handlers/__init__.py	(revision 7440)
+++ handlers/__init__.py	(working copy)
@@ -32,11 +32,12 @@
                   RFC822Marshaller)
 
 if config.hasLibxml2:    
-    # Now register our own xml marshallers
+    # Now register simple marshaller
     from Products.Marshall.handlers.simple import SimpleXMLMarshaller
-    from Products.Marshall.handlers.atxml import ATXMLMarshaller
-
     registerComponent('simple_xml', 'Simple XML Marshaller',
                       SimpleXMLMarshaller)
-    registerComponent('atxml', 'ATXML Marshaller',
-                      ATXMLMarshaller)
+
+# Register atxml marshaller
+from Products.Marshall.handlers.atxml import ATXMLMarshaller
+registerComponent('atxml', 'ATXML Marshaller',
+                  ATXMLMarshaller)