Hello all, Slf4j-api is now a dependency of lb-classic module. As a direct consequence, many of the classes found in slf4j-api.jar and also in lb-classic module were removed in the latter. At this stage, slf4j-api.jar is not in ibiblio. It is something we should do in the near future. Cheers, -- Ceki Gülcü Logback: The reliable, generic, fast and flexible logging framework for Java. http://ceki.blogspot.com/