Java 1.3.1 is unable to display 8bit umlauts in font "Lucida Sans Typewriter" 
and "Lucida Sans", if package SUNWi1of is installed.

The problem can be easily reproduced:

1. Testcase
-----------

% more test.java
import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class test extends Frame {
  Font f1, f2, f3, f4, f5, f6;

  public test() {
    f1 = new Font("Times New Roman", Font.PLAIN, 10);
    f2 = new Font("SansSerif", Font.PLAIN, 10);
    f3 = new Font("Lucida Console", Font.PLAIN, 10);
    f4 = new Font("Lucida Sans Typewriter", Font.PLAIN, 10);
    f5 = new Font("Lucida", Font.PLAIN, 10);
    f6 = new Font("Lucida Sans", Font.PLAIN, 10);
    setVisible(true);
  }

  public void paint(Graphics g) {
    g.setFont(f1);
    drawString(g, "Times New Roman", 60);
    g.setFont(f2);
    drawString(g, "SansSerif", 80);
    g.setFont(f3);
    drawString(g, "Lucida Console", 100);
    g.setFont(f4);
    drawString(g, "Lucida Sans Typewriter", 120);
    g.setFont(f5);
    drawString(g, "Lucida", 140);
    g.setFont(f6);
    drawString(g, "Lucida Sans", 160);
  }

  public void drawString(Graphics g, String s, int y) {
    String t = "\344\366\374  \u00C4\u00D6\u00DC\u00C5\u00e4\u00f6\u00fc\u00df";
    g.drawString(s + ": " + t, 10, y);
  }

  public static void main(String argv[]) {
    test t = new test();
    Graphics g = t.getGraphics();
    t.setSize(200, 100);
    t.paint(g);

    t.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
  }
}
%


2. Compile and run
------------------

The problem is only reproducible, if SUNWi1of is present.

% pkginfo SUNWi1of
system      SUNWi1of       ISO-8859-1 (Latin-1) Optional Fonts
% 

% /j2sdk1_3_1_04/bin/java -version
java version "1.3.1_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_04-b02)
Java HotSpot(TM) Client VM (build 1.3.1_04-b02, mixed mode)
/j2sdk1_3_1_04/bin/javac test.java
% 

% /j2sdk1_3_1_04/bin/java test

a window will pop up, listing six lines:
(The umlaut charcters are paraphrased in the following.)

"Times New Roman: <some 8bit characters "o"a"u "A"O"U��A"a"o"u"s>"
"SansSerif: <some 8bit characters "o"a"u "A"O"U��A"a"o"u"s>"
"Lucida Console: <some 8bit characters "o"a"u "A"O"U��A"a"o"u"s>"
"Lucida Sans Typewriter: <some strange characters>"
"Lucida: <some 8bit characters "o"a"u "A"O"U��A"a"o"u"s>"
"Lucida Sans:  <some strange characters>"

Select WindowManager->close to exit.

The behaviour is independent of the locale at compiletime or at runtime.