WARN Log From spring-dm During Bootup Karaf Container

Issue

Any information about this WARN log which always appears during start up karaf container.

21:38:13,904 | WARN  | r-1.2.1-thread-1 | NamespaceManager                 | nternal.support.NamespaceManager  132 | 95 - org.springframework.osgi.extender - 1.2.1 | Bundle Apache Aries Transaction Enlisting JDBC Datasource (org.apache.aries.transaction.jdbc) cannot see class [org.springframework.beans.factory.xml.NamespaceHandlerResolver]; ignoring its namespace handlers
2013-08-20 21:38:13,904 | WARN  | ork.osgi.extender-1.2.1-thread-1 | nder.internal.support.NamespaceManager |                                |                                          | Bundle Apache Aries Transaction Enlisting JDBC Datasource (org.apache.aries.transaction.jdbc) cannot see class [org.springframework.beans.factory.xml.NamespaceHandlerResolver]; ignoring its namespace handlers