--- a/jdk/src/share/classes/javax/swing/plaf/synth/SynthSliderUI.java	Sat Feb 27 15:09:16 2010 +0300
+++ b/jdk/src/share/classes/javax/swing/plaf/synth/SynthSliderUI.java	Sat Feb 27 16:03:05 2010 +0300
@@ -865,13 +865,17 @@
                     valueRect.y, -1);
         }
 
-        SynthContext subcontext = getContext(slider, Region.SLIDER_TRACK);
-        paintTrack(subcontext, g, trackRect);
-        subcontext.dispose();
+        if (slider.getPaintTrack() && clip.intersects(trackRect)) {
+            SynthContext subcontext = getContext(slider, Region.SLIDER_TRACK);
+            paintTrack(subcontext, g, trackRect);
+            subcontext.dispose();
+        }
 
-        subcontext = getContext(slider, Region.SLIDER_THUMB);
-        paintThumb(subcontext, g, thumbRect);
-        subcontext.dispose();
+        if (clip.intersects(thumbRect)) {
+            SynthContext subcontext = getContext(slider, Region.SLIDER_THUMB);
+            paintThumb(subcontext, g, thumbRect);
+            subcontext.dispose();
+        }
 
         if (slider.getPaintTicks() && clip.intersects(tickRect)) {
             paintTicks(g);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/JSlider/6923305/bug6923305.java	Sat Feb 27 16:03:05 2010 +0300
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2010 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+ * @bug 6923305
+ * @summary SynthSliderUI paints the slider track when the slider's "paintTrack" property is set to false
+ * @author Pavel Porvatov
+ * @run main bug6923305
+ */
+
+import javax.swing.*;
+import javax.swing.plaf.synth.SynthContext;
+import javax.swing.plaf.synth.SynthLookAndFeel;
+import javax.swing.plaf.synth.SynthSliderUI;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+
+public class bug6923305 {
+    public static void main(String[] args) throws Exception {
+        UIManager.setLookAndFeel(new SynthLookAndFeel());
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                JSlider slider = new JSlider();
+
+                slider.setUI(new SynthSliderUI(slider) {
+                    @Override
+                    protected void paintTrack(SynthContext context, Graphics g, Rectangle trackBounds) {
+                        throw new RuntimeException("Test failed: the SynthSliderUI.paintTrack was invoked");
+                    }
+                });
+
+                slider.setPaintTrack(false);
+                slider.setSize(slider.getPreferredSize());
+
+                BufferedImage bufferedImage = new BufferedImage(slider.getWidth(), slider.getHeight(),
+                        BufferedImage.TYPE_INT_ARGB);
+
+                slider.paint(bufferedImage.getGraphics());
+            }
+        });
+    }
+}