I find that one of my applications (a webapp running on jboss-4.2.1ga )
stops logging when I added drools.
Actually it does not entirely stop logging, but it just becomes very
very quiet (ERROR only).
After some digging I discovered that drools-repository.jar contains
log4j.xml and when I deleted that file from the jar,
my webapp logging returned to normal levels.
Is this expected behavior?