...just trying to switch to slf4j + logback its an equinox OSGI app in my own bundles I was using log4j, so its easy to migrate, but one question: * I can convert log4j.properties files, but what about log4j.xml files ? I'm using some third party bundles with commons logging, and with no problems I'm using commons.logging over slf4j :-) another third party bundle uses log4j, but needs classes from package log4j.xml. it seems that you don't have this class in your log4j over slf4j bridge ? (I'm using the slf4j bundles provided by SpringSourceEnterpriseBundleRepository) thx. ekke -- View this message in context: http://www.nabble.com/log4j.xml-and-log4joverslf4j-tp19493020p19493020.html Sent from the Logback User mailing list archive at Nabble.com.