FULL PRODUCT VERSION :
java version "1.6.0_01"
Java(TM) SE Runtime Environment (build 1.6.0_01-b06)
Java HotSpot(TM) Client VM (build 1.6.0_01-b06, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]
Linux donald 2.6.20-1.2944.fc6

OS doesn't seam to matter

A DESCRIPTION OF THE PROBLEM :
JTextPane line spacing in JRE1.6 differs from JRE1.5 when using some fonts, not all though. I can't seem to find what the defining factor is, but both Arial and Times New Roman cause the problem.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the supplied code in both JRE1.5 and JRE1.6

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expect the total space used to render the text to be the same.
ACTUAL -
There is a 20 pixel difference between versions.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
No Error message

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.Rectangle;

import javax.swing.*;
import javax.swing.text.*;

public class TestModelToView extends JFrame {

public TestModelToView(){
JTextPane tp = new JTextPane();
String t = "Waterfront Blues Festival July 4th-8th\r\n"+
"Held on the waterfront, the five-day Waterfront Blues Festival \r\n"+
"brings people from all over the state the hear some of the best \r\n"+
"blues bands from all over the world and watch fireworks on the \r\n"+
"Fourth of July. \r\n"+
"\r\n"+
"Mt. Hood Jazz Festival August 4th-6th\r\n"+
"One of the nation's premiere jazz festivals featuring local talent as \r\n"+
"well as some of the most well-known jazz musicians from the \r\n"+
"Northwest and across the nation. This festival is held the first two \r\n"+
"weekends in August at various venues in and around Portland.\r\n"+
"\r\n"+
"Vancouver Wine and Jazz Festival August 24th-26th\r\n"+
"Esther Short Park in downtown Vancouver, Washington hosts \r\n"+
"internationally acclaimed jazz artists. Other features of this annual \r\n"+
"summertime fes;tival are great wines, fine cuisine, and artwork by \r\n"+
"Northwest artists. \r\n"+
"\r\n"+
"Musicfest NW September 6th-8th\r\n"+
"In September, over 250 bands featuring all music genres perform \r\n"+
"at various places around Portland. \r\n";

tp.setText(t);
StyledDocument doc = tp.getStyledDocument();
SimpleAttributeSet sas = new SimpleAttributeSet();
StyleConstants.setFontFamily(sas, "Times New Roman");
StyleConstants.setFontSize(sas, 15);
doc.setCharacterAttributes(0, doc.getLength(), sas, true);
tp.setDocument(doc);
getContentPane().add(tp);
setSize(600,600);
setVisible(true);


try {
Thread.sleep(1000);
JOptionPane.showMessageDialog(this, tp.modelToView(doc.getLength()));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}


public static void main(String[] args){
new TestModelToView();
}

}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
No work around at this time