This is related to 6358747.  
Occurs in 1.5 update but not in 1.6.

To reproduce:
Run the following test and when the printDialog is shown, change the printer.

import java.awt.Graphics;
import java.awt.print.*;
import javax.swing.*;
import javax.swing.SwingUtilities;

public class CrashJVM
{ static public void main(String[] args)
  {  new AFrame().setVisible(true);
  }
  private static class AFrame extends JFrame
  {  public AFrame()
     {  final APanel aPanel = new APanel();
        SwingUtilities.invokeLater(new Runnable()
             {   public void run()
                 { aPanel.startPrint();
                 }
             });
     }
  }
  private static class APanel extends JPanel
  {  private APrintable report;
     public APanel()
     {   report = new APrintable();
     }
     public Book getBook(PageFormat format)
     {  return report.getBook(format);
     }
     public void startPrint()
     {  PrinterJob job = PrinterJob.getPrinterJob();
        Paper a4Paper = new Paper();
        a4Paper.setSize(595, 840);
        a4Paper.setImageableArea(40, 40, 515, 760);
        PageFormat pageFormat = job.defaultPage();
        pageFormat.setOrientation(PageFormat.PORTRAIT);
        pageFormat.setPaper(a4Paper);
		for (int i=0; i<4; ++i) {
        //pageFormat = job.pageDialog(pageFormat);
        //job.setPageable(getBook(pageFormat));
			job.printDialog(); // <-- crashes the JVM
		}
     }
     private class APrintable extends JPanel implements Printable
     {  public Book getBook(PageFormat format)
        {  return new PrintBook(format);
        }
        public int print(Graphics g, PageFormat format, int page)
        {  return PAGE_EXISTS;
        }
        private class PrintBook extends Book
        {  public PrintBook(PageFormat format)
           { append(APrintable.this, format, 1);
           }
        }
     }
  }
}

RESULT:
Crash on msctf.ime