It happens on Win XP SP2. I do not know if it depends on value of PageFormat parameter. It does not happen with JDK 6u5. I did not find similar issue so I file new one. Similar issue happens on Linux reported as issue #6633656. If necessary I can send/attach module suite for NetBeans IDE to reproduce.

java.lang.NullPointerException: null pData
       at sun.awt.windows.WComponentPeer.nativeHandleEvent(Native Method)
       at sun.awt.windows.WComponentPeer.handleEvent(WComponentPeer.java:262)
       at java.awt.Component.dispatchEventImpl(Component.java:4060)
       at java.awt.Container.dispatchEventImpl(Container.java:2024)
       at java.awt.Window.dispatchEventImpl(Window.java:1791)
       at java.awt.Component.dispatchEvent(Component.java:3819)
       at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
[catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
       at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
       at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153)
       at java.awt.Dialog$1.run(Dialog.java:535)
       at java.awt.Dialog$2.run(Dialog.java:565)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.awt.Dialog.show(Dialog.java:563)
       at sun.awt.windows.WPrinterJob.pageDialog(WPrinterJob.java:441)
       at org.openide.actions.PageSetupAction.performAction(PageSetupAction.java:60)
       at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:118)
       at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:77)
       at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:114)
       at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
       at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
       at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
       at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
       at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
       at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1051)
       at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1092)
       at java.awt.Component.processMouseEvent(Component.java:5517)
       at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
       at java.awt.Component.processEvent(Component.java:5282)
       at java.awt.Container.processEvent(Container.java:1966)
       at java.awt.Component.dispatchEventImpl(Component.java:3984)
       at java.awt.Container.dispatchEventImpl(Container.java:2024)
       at java.awt.Component.dispatchEvent(Component.java:3819)
       at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
       at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
       at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
       at java.awt.Container.dispatchEventImpl(Container.java:2010)
       at java.awt.Window.dispatchEventImpl(Window.java:1791)
       at java.awt.Component.dispatchEvent(Component.java:3819)
       at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
       at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
       at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
       at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)