Hello Mark, I have read the paper you cited. It does a good job at presenting the problem and a possible solution, and from what i understand JBossTS seems to use this solution. If other people are reading this, the article can be found for free at: http://www.cs.ncl.ac.uk/publications/inproceedings/papers/598.pdf If you don't mind i have a few questions, first about the article (to be sure i got it right) and then about the JBossTS implementation. For the sake of clarity i will post these questions in two separate posts. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4255767#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...