Index: tasklist/core/src/org/netbeans/modules/tasklist/core/TaskChildren.java
===================================================================
RCS file: /cvs/tasklist/core/src/org/netbeans/modules/tasklist/core/TaskChildren.java,v
retrieving revision 1.5
diff -u -r1.5 TaskChildren.java
--- tasklist/core/src/org/netbeans/modules/tasklist/core/TaskChildren.java	23 Nov 2003 19:13:10 -0000	1.5
+++ tasklist/core/src/org/netbeans/modules/tasklist/core/TaskChildren.java	6 Dec 2003 01:14:31 -0000
@@ -14,12 +14,14 @@
 
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.ListIterator;
 import org.openide.nodes.Node;
 import org.openide.nodes.Children;
+import org.openide.util.Mutex;
 
 
 /** Children object for the Task list; used to track
@@ -38,20 +40,26 @@
     
     private void refreshKeys() {
         List subtasks = parent.getSubtasks();
+        final Collection myKeys;
         if (subtasks == null) {
-            setKeys(Collections.EMPTY_SET);
-            return;
+            myKeys = Collections.EMPTY_SET;
+        } else {
+            myKeys = new LinkedList();
+            ListIterator it = subtasks.listIterator();
+            while (it.hasNext()) {
+                Task item = (Task)it.next();
+                myKeys.add(item);
+            }
+            // XXX couldn't I just do
+            //   setKeys(parent.getSubtasks()) ?? Check if this method
+            // clones the list... if it doesn't I can do it
         }
-        myKeys = new LinkedList();
-        ListIterator it = subtasks.listIterator();
-        while (it.hasNext()) {
-            Task item = (Task)it.next();
-            myKeys.add(item);
-        }
-        // XXX couldn't I just do
-        //   setKeys(parent.getSubtasks()) ?? Check if this method
-        // clones the list... if it doesn't I can do it
-        setKeys(myKeys);
+        // #37802: TreeTableView apparently chokes on non-EQ children updates.
+        Mutex.EVENT.readAccess(new Runnable() {
+            public void run() {
+                setKeys(myKeys);
+            }
+        });
     }
 
     /** Called when the parent node is expanded; now we need