Hello dear logback commiters, I'm trying to use SLF4j MDC in my multithread program and i'm having the following error: SLF4J: Failed to load class "org.slf4j.impl.StaticMDCBinder". SLF4J: See http://www.slf4j.org/codes.html#no_static_mdc_binder for further details. Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/impl/StaticMDCBinder at org.slf4j.MDC.<clinit>(MDC.java:70) at fr.mipih.jms.AsynchConsumer.<init>(AsynchConsumer.java:50) at fr.mipih.jms.AsynchConsumer.main(AsynchConsumer.java:182) I have the following jars in the classpath : slf4j-api-1.4.2.jar jcl104-over-slf4j-1.4.2.jar logback-classic-0.9.7.jar logback-core-0.9.7.jar I have check the content of the jars and in fact StaticMDCBinder is nowhere to be found (should be in logback-classic-0.9.7.jar as I understand it) I have checked the repository at http://svn.qos.ch/repos/logback/trunk and found that StaticMDCBinder was added in logback-classic\src\main\java\org\slf4j\impl back somewhere in may. I have no [easy] way to compile the new source code on my platform since logback use maven (don't have it, don't want to install it, don't want to learn how to use it). Isn't it time to release a 0.9.8 or something (why not a 1.0) so that slf4j's MDC (and other bug fixes) are available to the majority ? TIA. ZC.