Thanks for your prompt reply.
I fixed both of these issues. But, it seems still this is not solved.
My steps after activating loadtimeweaving in the bootstrap (aop.xml):
1. Putting the LoggingAspect.aop in the jboss-5.1.0.GA/server/all/deploy
(also in the second case in jboss-5.1.0.GA/server/all/deployers/jboss-aop-jboss5.deployer)
2. Putting Quickstart_helloworld.esb in the same folder
3. running "ant runtest"
The helloworld service works, but there is no interception.
I updated the attachment of the first post with my new files.
Thank you,
Mehdi