Platform: Solaris
JDK: 6.0, 6u7, 6u10beta

If executed with -Dawt.toolkit=sun.awt.motif.MToolkit the following code sample:
------
import java.awt.*;
import java.awt.image.BufferedImage;

public class TrayIconFailure {

    public static void main(String[] args) {
        new TrayIcon(new BufferedImage(1,1, BufferedImage.TYPE_INT_RGB));
    }
}
------
produces:
Exception in thread "main" java.lang.UnsatisfiedLinkError: java.awt.TrayIcon.initIDs()V
at java.awt.TrayIcon.initIDs(Native Method)
at java.awt.TrayIcon.<clinit>(TrayIcon.java:93)
at TrayIconFailure.main(TrayIconFailure.java:7)

The following tests fail on RI due to this reason if executed with motif toolkit:

api/java_awt/TrayIcon/index.html#ActionListeners
api/java_awt/TrayIcon/index.html#Ctors
api/java_awt/TrayIcon/index.html#DisplayMessage
api/java_awt/TrayIcon/index.html#FieldsAccessors
api/java_awt/TrayIcon/index.html#MouseListeners
api/java_awt/TrayIcon/index.html#MouseMotionListeners