Following testcase crashes on windows-amd64 with jdk7(b10,b11), jdk6u2 but doesn't with jdk6b98:

import javax.swing.JFrame;
import javax.swing.UIManager;

public class Test {

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel(
                    UIManager.getSystemLookAndFeelClassName());
        } catch (Exception ex) {
            System.out.println("Unable to load native look and feel");
        }
        (new JFrame()).setVisible(true);
    }
}

Here is the stack trace from crash dump:

ntdll!ZwWaitForSingleObject+0xa
kernel32!WaitForSingleObjectEx+0x130
faultrep!InternalGenerateMinidumpEx+0x722
faultrep!InternalGenerateMinidump+0x10a
faultrep!InternalGenFullAndTriageMinidumps+0xfb
faultrep!ReportFaultDWM+0x731
faultrep!StartManifestReportImmediate+0x2c0
faultrep!ReportFault+0x3ca
kernel32!UnhandledExceptionFilter+0x629
fontmanager!__report_gsfailure+0xec [d:\srvrtm\base\tools\gs_support\umode\gs_report.c @136]
fontmanager!DifferentFamily+0xb9 [d:\export\java2d\j2se\src\windows\native\sun\font\fontpath.c @ 195]
fontmanager!EnumFontFacesInFamilyProcW+0x60 [d:\export\java2d\j2se\src\windows\native\sun\font\fontpath.c @ 217]
gdi32!EnumFontsInternalW+0x1e6
gdi32!EnumFontFamiliesExW+0x48
fontmanager!EnumFamilyNamesW+0x239 [d:\export\java2d\j2se\src\windows\native\sun\font\fontpath.c @ 341]
gdi32!EnumFontsInternalW+0x1e6
gdi32!EnumFontFamiliesExW+0x48
fontmanager!Java_sun_font_FontManager_populateFontFileNameMap+0x383 [d:\export\java2d\j2se\src\windows\native\sun\font\fontpath.c @ 604]
0x209fcc4
0x1fde7a8