Which version of Fuse ESB are you using?
Can you check if there is a file which name is org.ops4j.pax.logging.cfg in the directory of $ESB_HOME/etc/ ?
It's version 4.3.1.
Yes, i have that file.
Strange thing is that if i start servicemix when the current directory is /servicemix/bin, i have the issue i pointed out. BUT, if i start it by doing this: ./servicemix/bin/servicemix, there is no warnings. what the... o.O