The ProgressMonitor works fine except that it won't show the progress bar. Only happens when Look and Feel is set to GTK+.

Testcase is in following testsuite.
/net/sqe1/quality2/i18n/workspaces/i18n_mustang_ws/i18n/bundles/b07/gs16-b07.tar.gz

To reproduce:
Expand above testsuite.
Go to i18n_mustang_ws/i18n/src/GS
Invoke testcase as follows.
 $ sh run_gs.sh -jdk:$JAVA_HOME font-render/swing/three/JEditorPaneTest.java
Select GTK+ L&F then click the button.

Tested configuration:
OS: RedHatEL4, Solaris10
locale: ja_JP.UTF-8
JDK: promoted Mustang b53