found this anonymous wrote : I was having the same problem and I solved it by downloading an older | version of slf4j. | | | the version of slf4j-api shipped with hibernate is 1.5.2 (lib/common/ | slf4j-1.5.2.jar) | | I downloaded the same version of slf4j from here: http://www.slf4j.org/dist/ | and the problem is gone. | here: http://www.velocityreviews.com/forums/t635509-hibernate-tutorial-problem.... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4183885#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...