Testcase from regression workspace, JPEGMultithread.java is passing on Windows but failing on Solaris and Linux platforms with Tiger JDKS.

Testcase Location:
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/net/urts071.india/export6/testSuites/Regression/workspace_150/test/java/awt/Menu/MenuVisibilityTest/MenuVisibilityTest.html

JDK:
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java version "1.5.0_07-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_07-ea-b01)
Java HotSpot(TM) Client VM (build 1.5.0_07-ea-b01, mixed mode, sharing)

ERROR:
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Failed. Execution failed: Applet thread threw exception: java.lang.RuntimeException: First menu item is not pressed. It is possible Menu was not visible.