You need to update your jboss.
There was a memory leak in jms in some early 3.2 releases. Don't remember exactly when they got fixed, think in 3.2.4, however, butter jump to the latest 3.2 or even 4.0.1 if possible.
Ok, i'll set all up to a newest version of Jboss.
Anyone knows when it was solved?
I also noticed that the timetolive param of the jms queues is not working in jboss 3.2.1, am i wrong with this.
Thanks for your answer.