Found one Java-level deadlock:
=============================
"Default RequestProcessor":
  waiting to lock monitor 0x00a8670c (object 0x034f8160, a java.awt.Component$AWTTreeLock),
  which is held by "AWT-EventQueue-1"
"AWT-EventQueue-1":
  waiting to lock monitor 0x00a866cc (object 0x04ca4200, a org.netbeans.modules.editor.NbEditorDocument),
  which is held by "Default RequestProcessor"

Java stack information for the threads listed above:
===================================================
"Default RequestProcessor":
        at java.awt.Container.getComponent(Container.java:278)
        - waiting to lock <0x034f8160> (a java.awt.Component$AWTTreeLock)
        at javax.swing.JViewport.getView(JViewport.java:940)
        at javax.swing.JViewport.getViewPosition(JViewport.java:1037)
        at org.netbeans.editor.EditorUI.getExtentBounds(EditorUI.java:1274)
        at org.netbeans.editor.EditorUI.getExtentBounds(EditorUI.java:1261)
        at org.netbeans.editor.EditorUI.scrollRectToVisibleFragile(EditorUI.java:1304)
        at org.netbeans.editor.BaseCaret.update(BaseCaret.java:515)
        at org.netbeans.editor.ext.ExtCaret.update(ExtCaret.java:333)
        at org.netbeans.editor.BaseCaret.dispatchUpdate(BaseCaret.java:466)
        at org.netbeans.editor.BaseCaret.modifiedUpdate(BaseCaret.java:928)
        at org.netbeans.editor.BaseCaret.atomicUnlock(BaseCaret.java:941)
        at org.netbeans.editor.BaseDocument.fireAtomicUnlock(BaseDocument.java:1393)
        at org.netbeans.editor.BaseDocument.atomicUnlockImpl(BaseDocument.java:1285)
        - locked <0x04ca4200> (a org.netbeans.modules.editor.NbEditorDocument)
        at org.netbeans.editor.BaseDocument.atomicUnlock(BaseDocument.java:1270)
        at org.netbeans.editor.BaseDocument.runAtomicAsUser(BaseDocument.java:1089)
        at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:217)
        at org.openide.text.NbDocument.runAtomic(NbDocument.java:341)
        at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.commitChanges(ResourceImpl.java:850)
        at org.netbeans.modules.javacore.ExclusiveMutex.notifyElements(ExclusiveMutex.java:492)
        at org.netbeans.modules.javacore.ExclusiveMutex.leave(ExclusiveMutex.java:368)
        - locked <0x03fdb8a0> (a org.netbeans.modules.javacore.ExclusiveMutex)
        at org.netbeans.mdr.NBMDRepositoryImpl.endTrans(NBMDRepositoryImpl.java:248)
        at org.netbeans.modules.editor.java.JMIUtils.endTrans(JMIUtils.java:141)
        at org.netbeans.modules.editor.java.NbJavaJMIFastImport.autoImport(NbJavaJMIFastImport.java:161)
        at org.netbeans.modules.editor.java.NbJMIResultItem$ClassResultItem$1.run(NbJMIResultItem.java:634)
        at org.openide.util.Task.run(Task.java:189)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:330)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:721)
"AWT-EventQueue-1":
        at java.lang.Object.wait(Native Method)
        - waiting on <0x04ca4200> (a org.netbeans.modules.editor.NbEditorDocument)
        at java.lang.Object.wait(Object.java:474)
        at javax.swing.text.AbstractDocument.readLock(AbstractDocument.java:1392)
        - locked <0x04ca4200> (a org.netbeans.modules.editor.NbEditorDocument)
        at javax.swing.plaf.basic.BasicTextUI.getPreferredSize(BasicTextUI.java:823)
        at javax.swing.JComponent.getPreferredSize(JComponent.java:1582)
        at javax.swing.JEditorPane.getPreferredSize(JEditorPane.java:1224)
        at javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:769)
        at java.awt.Container.layout(Container.java:1401)
        at java.awt.Container.doLayout(Container.java:1390)
        at java.awt.Container.validateTree(Container.java:1473)
        at java.awt.Container.validate(Container.java:1448)
        - locked <0x034f8160> (a java.awt.Component$AWTTreeLock)
        at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
        at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
        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)

Found 1 deadlock.