SwingSet2 with Kestrel throws NPE at text.Utilities.getRowEnd (DefaultEditorKit) on Windows NT and Kestrel-L and Plugin and Classic VM (haven't reproduced with Hotspot ... yet).

To Reproduce:
1) http://javaweb.eng.sun.com/~nancys/SwingSet2Plugin.html
2) Go to any source code area.
3) While typing try to select an item in the Look & Feel menu.
4) Click and type all at once a bunch.
RESULT: The following exception is thrown:

Exception occurred during event dispatching:
java.lang.NullPointerException:
        at javax.swing.text.Utilities.getRowEnd(Unknown Source)
        at javax.swing.text.DefaultEditorKit$EndLineAction.actionPerformed(Unknown Source)
        at javax.swing.textjava.lang.InterruptedException: operation interrupted
java.lang.InterruptedException: operation interrupted
cked(Unknown Source)
        at java.awt.AWTEventMulticaster.mouseClicked(Unknown Source)
        at java.awt.Component.processMouseEvent(Unknown Source)
        at java.awt.Component.processEvent(Unknown Source)
        at java.awt.Container.processEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)