--- a/jdk/src/solaris/classes/sun/awt/X11/XToolkit.java	Thu Sep 30 21:06:53 2010 +0400
+++ b/jdk/src/solaris/classes/sun/awt/X11/XToolkit.java	Fri Oct 01 15:10:32 2010 +0400
@@ -1482,8 +1482,19 @@
         try {
             if (numberOfButtons == 0) {
                 numberOfButtons = getNumberOfButtonsImpl();
+                numberOfButtons = (numberOfButtons > MAX_BUTTONS_SUPPORTED)? MAX_BUTTONS_SUPPORTED : numberOfButtons;
+                //4th and 5th buttons are for wheel and shouldn't be reported as buttons.
+                //If we have more than 3 physical buttons and a wheel, we report N-2 buttons.
+                //If we have 3 physical buttons and a wheel, we report 3 buttons.
+                //If we have 1,2,3 physical buttons, we report it as is i.e. 1,2 or 3 respectively.
+                if (numberOfButtons >=5) {
+                    numberOfButtons -= 2;
+                } else if (numberOfButtons == 4 || numberOfButtons ==5){
+                    numberOfButtons = 3;
+                }
             }
-            return (numberOfButtons > MAX_BUTTONS_SUPPORTED)? MAX_BUTTONS_SUPPORTED : numberOfButtons;
+            //Assume don't have to re-query the number again and again.
+            return numberOfButtons;
         } finally {
             awtUnlock();
         }