I am starting to develop an Eclipse plugin (technically, an OSGi plugin) and one of the first problems I\'ve run into is that I can\'t seem to control the commons-logging ou
This is not an actual answer to your question, but you might find some clues in this set of articles by ekke.
I suppose you read already "Using Log4J in Eclipse Equinox/OSGi":
Did you launch an osgi session in a console mode ?
java -jar org.eclipse.osgi_3.3.0.v20070530.jar -console -noExit -clean
That way, you may test log4j in a pure osgi environment and check if it works there.
Let use know if you find a solution (publish it as an answer), and I will vote it up ;)