Java Version: 1.6.0_10-ea-b11
Platform: Solaris-Sparc 10
Problem: Running the test MemoryLeakTest with d3d flag, when you max/min the test windows as instruction says, it threw exceptions as below, but it is not always threw.
/net/jre.sfbay/p/v06/jdk/6_10/ea/b11/binaries/solaris-sparc/bin/java -Dsun.java2d.d3d=True MemoryLeakTest
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at MemoryLeak.componentResized(MemoryLeakTest.java:131)
        at java.awt.Component.processComponentEvent(Component.java:5920)
        at java.awt.Component.processEvent(Component.java:5874)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Window.processEvent(Window.java:1801)
        at java.awt.Component.dispatchEventImpl(Component.java:4466)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Window.dispatchEventImpl(Window.java:2443)
        at java.awt.Component.dispatchEvent(Component.java:4296)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:284)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
MemoryLeakTest Failed.
Exception in thread "main" java.lang.Exception: MemoryLeakTest failed.
        at MemoryLeakTest.main(MemoryLeakTest.java:27)

How to reproduce the problem:
Use 6u10-b11 java which in:
/net/jre.sfbay/p/v06/jdk/6_10/ea/b11/binaries/solaris-sparc
to run the regression test in
/net/jano1/export1/jcg/ws/6uN/jcg/j2se/test/java/awt/image/MemoryLeakTest