If SourceForge fails to start up, or is starting but is throwing errors on every page, then typically something went wrong during the JBOSS bootstrap process. Fortunately, JBOSS logs this process to: /usr/local/sourceforge/jboss/jboss-<version>/server/default/log/boot.log.
SourceForge writes its startup and shutdown info, as well as any system errors to /usr/local/ soureforge/log/server.log. If you encounter a system error while using SourceForge, it is logged here. Additionally, if you see an 'exid' string in the application, the Java stack trace for that exid will be logged in this file.