test java/awt/MouseAdapter/MouseAdapterUnitTest/MouseAdapterUnitTest.java failed on linux since jdk6 fcs

test consistently failed with jdk6u51b04 and intermittently failed with jdk6b105, jdk6u45b05; I can't reproduce the same failure with jdk7; it failed with jdk7 as JDK-6849369 sometimes
test passed on windows 7 64 bit with jdk6u51b04

It can be timing issue


log out:
----------System.out:(13/401)----------
Any messages for the tester will display here.
Any messages for the tester will display here.
pressed = false
released = false
clicked = false
entered = false
rotated = false
dragged = false
moved = false
The test failed: press, release or click hasn't come
The test failed: press, release or click hasn't come
The test is over, hit Ctl-C to stop Java VM
The test is over, hit Ctl-C to stop Java VM
----------System.err:(14/1015)----------
java.lang.RuntimeException: Test failed. Exception thrown: java.lang.RuntimeException: press, release or click hasn't come
at MouseAdapterUnitTest.init(MouseAdapterUnitTest.java:77)
at MouseAdapterUnitTest.main(MouseAdapterUnitTest.java:210)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:96)
at java.lang.Thread.run(Thread.java:662)