There is a problem with Mediumwieghts not popping up on Solaris in 1.2:

import java.awt.*;
import com.sun.java.swing.*;

public class Test extends JPanel {

    public Test() {
	setLayout(new BorderLayout());
	JComboBox screenCombo = new JComboBox();
	screenCombo.setLightWeightPopupEnabled(false);
	for (int i = 0; i < 20; i++) 
	    screenCombo.addItem(String.valueOf(i) + " Item");
	add("North", screenCombo);
	JPanel jp = new JPanel(new GridLayout(0,3));
	jp.add(new jpanel());
	jp.add(new panel());
	jp.add(new canvas());
	add(jp);
    }

    public static void main(String s[]) {
	JFrame f = new JFrame("ComboBox Test");
	f.getContentPane().add("Center", new Test());
	f.pack();
	f.setSize(new Dimension(300,300));
	f.show();
    }

class jpanel extends JPanel {
    jpanel() { setBackground(Color.black); }
} 

class panel extends Panel {
    panel() { setBackground(Color.blue); }
} 

class canvas extends Canvas {
    canvas() { setBackground(Color.red); }
} 

} // end Test