WNT\IE4.0\jdk1.2.2.m - Loading SwingEvent Test
http://javaweb.eng/~nancys/BrowserSuiteM/Suite/QLhtml/5/8.html

WNT\NS4.5\jdk1.2.2.m - Loading Two Applet Test
http://javaweb.eng/~nancys/BrowserSuiteM/SuiteM/QLhtml/2/6.html

loading SwingEvent Test-not fatal, able to continue testing applet. Reproducible 2 of 3 attempts.

java.lang.NullPointerException
        at java.util.Hashtable.get(Hashtable.java, Compiled Code)
        at javax.swing.UIDefaults.get(UIDefaults.java, Compiled Code)
        at javax.swing.MultiUIDefaults.get(MultiUIDefaults.java, Compiled Code)
        at javax.swing.UIDefaults.getUIClass(UIDefaults.java, Compiled Code)
        at javax.swing.UIDefaults.getUI(UIDefaults.java, Compiled Code)
        at javax.swing.UIManager.getUI(UIManager.java, Compiled Code)
        at javax.swing.JPanel.updateUI(JPanel.java, Compiled Code)
        at javax.swing.JPanel.<init>(JPanel.java, Compiled Code)
        at javax.swing.JPanel.<init>(JPanel.java, Compiled Code)
        at javax.swing.JRootPane.createGlassPane(JRootPane.java:224)
        at javax.swing.JRootPane.<init>(JRootPane.java:181)
        at javax.swing.JApplet.createRootPane(JApplet.java:132)
        at javax.swing.JApplet.<init>(JApplet.java:125)
        at UISecurityApplet.<init>(UISecurityApplet.java:7)
        at java.lang.Class.newInstance0(Native Method)
        at java.lang.Class.newInstance(Class.java, Compiled Code)
        at sun.applet.AppletPanel.createApplet(AppletPanel.java:508)
        at sun.plugin.AppletViewer.createApplet(AppletViewer.java:763)
        at sun.applet.AppletPanel.runLoader(AppletPanel.java:444)
        at sun.applet.AppletPanel.run(AppletPanel.java:282)
        at java.lang.Thread.run(Thread.java:479)

UPDATE FOR O BUILD:
Also occurs on
W98/IE5.0, Two Applet Test
http://javaweb.eng/~nancys/BrowserSuiteM/SuiteM/QLhtml/2/6.html

W95/NS4.08 for the Dialog Creator Test
http://javaweb.eng/~nancys/BrowserSuiteM/SuiteM/QLhtml/4/6.html