Not that I know of...where would I do such a thing ?
My best guess is here. the jboss-log4j.xml(when I make changes while jboss is running I see jboss loading the new settings in the console) in "jboss-4.2.2.GA\server\default\conf":
I just replaced the old one with a fresh one from within jboss-4.2.2.GA.zip, but the STDERR-lines are still showing.