JPanel - Refresh Problem

Dear All,
I have a simple JFrame with inside a JPanel, with inside 2 others JPanels.

The top-inside panel displays an image, the bottom-inside panel has a JSlider. The user can use the JSlider to "animate" the image (for every movement of the JSlider a new frame is loaded and displayed).

This is the current situation:

http://img97.imageshack.us/img97/2512/onefo.th.png

The problem is that, as soon as the user moves the JSlider, the top JPanel start to have some drawing / refresh problems: the JSlider is painted also in the top panel (just painted, is not usable).

http://img20.imageshack.us/img20/3729/twob.th.png

As soon as the user resize the JFrame everything is again displayed correctly.

What can I do to avoid this issue?

I tried with repaint(), revalidate(), removeAll() and then add(...) but I was not able to solve this.

Thank you for your help!

Best,
galliva

You've got a bug in your code. The solution is to try to find the bug and then fix it.

Hint: If you need our help, then your next step would be to post the offending code. The best code would be a small compilable program that demonstrates the problem, an SSCCE