Run a build that generates a large console output. Say around 10MB or more. View the console log for the build. It should work just fine. Add the timestamper and run the build again (version 0.6). View the console log. Select to view full log. This frequently crashes Jenkins/Tomcat. Sometimes I actually get the whole log. This has occurred after a restart as well as after it has been running for a bit. I don't see the issue when view logs without the timestamper enabled (at least not yet).