Applet not working with Java 1.5

We have an Applet, that our Online Ordering Systems are based on, which in not working with Java 1.5. It was and is working with all previous version of Java. The primary problem is that there seems to be a problem with the paint method. We use JFrames for everything and we have frames nested inside each other. It seems that when a repaint should occur, it is not being triggered. If we minimize the applet and bring it back up, the repaint happens and everything looks correct. This is only one of the problems we are having, but it may fix some other issues. We can test that once we get this paint issue addressed
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