This is only a problem with JDK 1.3. Please see the attached tar file which has the testcase

The testcase tests busying RootPaneContainers (i.e. JFrame,JDialog). It has a toolbar of buttons across the bottom that test various things.

File list:
runnit - a script to compile and run BusyTest
BusyTest.java - tests various capabilities of GUIUtilities.java
GUIUtilities.java static methods for busying components

Click on the "Chnage Button Stste change" button and notice that the cursor dosen't changes to busy cursor. Similary click on "Test ScrollPanes" button which will bring up another frame with toolbar and buttons at the bottom. Click on the "Busy ScrollPane" button and move the cursor on the JScrollPane. The cursor dosen't changes to busy.