Reported @ http://www.theserverside.com/discussions/thread.tss?thread_id=46496 – We observed big performance degradation when we upgraded our Axis services to Axis2. This was bit socking because Axis2 is re-architected from Axis and supposed to be faster and better alternative than classic Axis. After extensive debugging efforts we found that code form annogen-0.1.0.jar was spending a lot of time in detecting JDK1.5 presence. We fixed the issue by modifying following methods to avoid detection repetitively and now our services flies. org.codehaus.jam.internal.TigerDelegate. isTigerJavadocAvailable (JamLogger logger) org.codehaus.jam.internal.TigerDelegate.isTigerReflectionAvailable(JamLogger logger) Hope this helps someone who is facing similar problem. Thanks, Sudhaker – I've attached the jprofiler call tree and fixed code for your quick eference. Thanks,