Guys, I noticied the strangest behaviour while running the EmbeddedTomcat example. In JBoss 2.0 final, I get these timmings, that look quite fine: 2.0 FINAL Non-Optimized: Avg. time/call(ms):3.185 Optimized: Avg. time/call(ms):0.821 In JBoss 09-Feb-2001 02:00 cvs snapshot, things look strange: results for the optimized version of the test seem to be pretty slow and close to the non-optimized one... like this: PRE2.1 09-Feb-2001 02:00 Non-Optimized: Avg. time/call(ms):1.893 Optimized: Avg. time/call(ms):1.452 AND in today's cvs checkout, right after Ole's new TX/JTA changes, these are the results: PRE2.1 CVS Non-Optimized: Avg. time/call(ms):78.603 Optimized: Avg. time/call(ms):2.503 WHOA! What happened there? 78 ms/ PER CALL? I don't belive these are good metrics to go out to V2.1... there must be something wrong... I dont have a profiler tool here at home, but you can get the .EAR's I was trying to deploy at: http://www.hugopinto.com/files/jboss-ears.zip ...and try it out yourselves... Inside you'll find 2 files: the original 2.0 .ear, and a modified one, in which i inserted the Interceptor Chains into the jboss.xml file. Regards, Hugo Pinto