JInternalFrame close button shrunk on windows 7 with classic look and feel ???

[satheesh bollam]

Hello all... Currently my swing application runs in Windows XP. I need to support my application on Windows 7 and this is where the problem begins. I got few problems like color discrepancies. When i changed the look and feel of the system to classic laf through code, the color discrpancies were gone but the close(cross mark at right top corner) button of the JInternalFrame was shrunk. I mean only half of the cross symbol was showing thus like a "V" symbol.

I "almost" got the classic look except for badly looking JInternalFrame icons and a standard issue of components at the corners of the screen appearing shrunk in all the screens of the application.

The code which changed the laf is as follows.

UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel");

This caused the JinternalFrame close button problem. I am using Java 1.6.0_16.

Can any body faced this kind of problem ? Please help me on this. Thanks in Advance.