Hi, I'm using jboss-3.2.5, jfreechart-1.0.10 and jcommon-1.0.13, them having the same exception.
I allread looked this post, so I decide to search if I have another Jar in the classpath.
In my search, I found another Jars in console-mgr.sar (jfreechart.jar - 1.0, jcommon.jar - 1.0).
I'm thinking that those Jars in console-mgr.sar are having conflict whith the Jars in my aplication, but I'm not sure if I must have to remove the console-mgr.sar of my Jboss to resove this problem.
Someone can help-me?