I recently attempted to reintroduce vjdbc.jar (http://vjdbc.sourceforge.net/) to my project only to discover that on doing so, logback (slf4j) is disabled and all logging goes to stdout. Following are the applicable jars in my CLASSPATH: jcl-over-slf4j-1.6.1.jar jul-to-slf4j-1.7.24.jar log4j-over-slf4j-1.6.1.jar logback-access-1.0.13.jar logback-classic-1.0.13.jar logback-core-1.0.13.jar slf4j-api-1.6.1.jar vjdbc.jar The MANIFEST.MF in vjdbc.jar contains no classpath info nor does the jar contain a logback.xml, etc. How could introduction of this jar to my classpath disable logback altogether? Thanks. Scott Dudley -------------------------------------------------------------------------------------------------------------------------------------------------- This message is for the designated recipient(s) only and may contain privileged, proprietary, and/or confidential information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited. Any views or opinions expressed are solely those of the author and do not necessarily represent those of MDSL. --------------------------------------------------------------------------------------------------------------------------------------------------