Hi. In section 1.4 of hibernate tutorial we can read: "The dateFormatter is a tool we'll need later to convert Date objects from and to strings. It makes sense to only have one formatter as a member of the servlet." But in the javadoc from SimpleDateFormat we can read: "Date formats are not synchronized. It is recommended to create separate format instances for each thread. If multiple threads access a format concurrently, it must be synchronized externally." I think this should be fixed. -- -=-=-=-=-=-=-=-=-=-=-=-=- Andrés González. http://coyotevil.blogspot.com