JFrame form appears empty in Windoes XP

Sometimes my JFrame forms open with only their border visible. The interior is transparent, showing the background. This also happens, but less often, with JOptionPanes. Whenever it does happen, I can minimize then restore the form and all is correct. I am using the latest JDK and JRE but it has been happening since 1.5. My OS is Windows XP PRO. Is this a common problem or mine only? In either case, does anyone have any ideas how to prevent it?
Thanks

If any of you can create a SSCCE to demonstrate an intermittent problem that maybe occurs an average 1 out of 20 times I would be maybe a little impressed. No I can't because I always create my GUI by hand without relying on an IDE to generated code that I don't understand. I also following the coding guidelines given in the Swing tutorial where you will find dozens of working examples that don't have a problem.
You are the one with the problem. We don't have time to guess what you might be doing wrong. Adding components to a frame is straight forward. We have no idea what you might be doing wrong. You've already been given the basics:
a) all code should be on the EDT
b) add components first before showing the GUI or if the GUI is visible then do revalidate(), repaint() on the panel.
Thats how simple it is.
So if you are not interested in posting your SSCCE, I'm not interested in making an effort to solve the problem.
You get what you give. In this case you have given nothing.

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Dear All,
thanks for your attention
really i modify my code to be appear as follow
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Fra: Pat Willener [email protected]
Sendt: 27. august 2013 09:09
Til: Randi Hognestad
Emne: Issue: installed Adobe Reader XI, Norwegian version, existing pdf will not open or appear empty
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JFrame form appears empty in Windoes XP

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