Index: javax/swing/RepaintManager.java
===================================================================
RCS file: /cvsroot/classpath/classpath/javax/swing/RepaintManager.java,v
retrieving revision 1.19
diff -u -r1.19 RepaintManager.java
--- javax/swing/RepaintManager.java	21 Nov 2005 14:01:43 -0000	1.19
+++ javax/swing/RepaintManager.java	5 Jan 2006 16:25:14 -0000
@@ -534,7 +534,14 @@
     }
     for (Iterator i = workInvalidComponents.iterator(); i.hasNext(); )
       {
-        JComponent comp = (JComponent) i.next();
+        Component comp = (Component) i.next();
+        // Find validate root.
+        while (!(comp instanceof JComponent)
+               || !((JComponent) comp).isValidateRoot()
+               && comp.getParent() != null)
+          comp = comp.getParent();
+
+        // Validate the validate root.
         if (! (comp.isVisible() && comp.isShowing()))
           continue;
         comp.validate();