Please stop JOptionPane from bugging me

Question

I am having problems with writing a GUI. I think I have distilled the problem down to one related to looping a JOptionPane. Does anyone know anything that will help me eliminate this problem (or bug)?
<code>
* This code results in a Win98 Ddhelp error
* It make Windows permanently unstable.
for ( int i=o ; i<2 ; i++ ){
JoptionPane.showMessageDialog(null, "Count is " + i);
System.exit(0);
* Whereas this causes no problems
int i=0;
JoptionPane.showMessageDialog(null, "Count is " + i);
int i=1;
JoptionPane.showMessageDialog(null, "Count is " + i);
System.exit(0);
</code>

Answer 1

This is getting worse! My previous post suggested that the problem was fixed but that was a misconception on my part. After running Norton utilities I did the tests again but I reduced the counter to just two iterations and the problem was gone. When I increase to four iterations the problem comes back!
The sample code above is actually two separate programs. The first program runs happily and shows the JOptionPane several times with the displayed text showing the counter number as expected. The program then terminates and a Win98 error message pops up. The heading is "Ddhelp" and the narrative is "This program has performed an illegal operation and will be shutdown. If the problem persitsts, contact the program vendor."
The only thing to be done is to press the OK button which removes the error message. However the program will no longer run as the error message pops up before the program has done anything. Any other (Java or non-Java) program is also likely to result in the same error message.
The second bit of sample code above is shown because it is functionally equivalent but does not use a loop with JOptionPane and seems to work without problems. This may suggest a possible solution to the problem by someone more knowledgeable than me.
If I can't understand this problem I will have to stop using JOptionPane which would be very unsatisfactory as I am writing a large GUI and JOptionPanes could be quite helpful to me. It might help to know if anyone can run the first bit of code on Win98 using JDK 1.4.1.
Perhaps I need to do something with invokeLater() but I have no experience nor confidence with threads.