What steps will reproduce the problem? 1. Start jperf.sh 2. Move mouse around window 3. Messages appear in linux window 4. GUI is unresponsive

What is the expected output? What do you see instead? GUI non-functioning

What version of the product are you using? On what operating system? jperf-2.0.0 CentOS 5.2

Please provide any additional information below. Output in linux window where I start jperf.sh Exception during event dispatch: java.lang.NullPointerException at gnu.java.awt.peer.gtk.GtkComponentPeer.setCursor(libgcj.so.7rh) at gnu.java.awt.peer.GLightweightPeer.setCursor(libgcj.so.7rh) at java.awt.Component.setCursor(libgcj.so.7rh) at org.jdesktop.swingx.plaf.basic.BasicTaskPaneUI$ToggleListener.mouseExited(BasicTaskPaneUI.java:383) at java.awt.Component.processMouseEvent(libgcj.so.7rh) at java.awt.Component.processEvent(libgcj.so.7rh) at java.awt.Container.processEvent(libgcj.so.7rh) at java.awt.Component.dispatchEventImpl(libgcj.so.7rh) at java.awt.Container.dispatchEventImpl(libgcj.so.7rh) at java.awt.Component.dispatchEvent(libgcj.so.7rh) at java.awt.LightweightDispatcher.handleMouseEvent(libgcj.so.7rh) at java.awt.LightweightDispatcher.dispatchEvent(libgcj.so.7rh) at java.awt.Container.dispatchEventImpl(libgcj.so.7rh) at java.awt.Window.dispatchEventImpl(libgcj.so.7rh) at java.awt.Component.dispatchEvent(libgcj.so.7rh) at java.awt.EventQueue.dispatchEvent(libgcj.so.7rh) at java.awt.EventDispatchThread.run(libgcj.so.7rh)

JPerf only works with the official JVM from SUN (http://java.sun.com) and not with GCJ nor OpenJDK. And it appears that your default JVM is GCJ... Try it and close the issue if it solves your problem.