3 awt(Motif_DnD) testcases are failing with 150_08-b03 but passing with 150-b64/150_01/150_02/150_03

these testcases are PASSING with 150-FCS,150_01,150_02 and 150_03
REGRESSION from 150_04 onwards
Testcase :
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AWT_DnD/XDnD/Automated/Motif_DnD/JavaToNative/LeaveNotificationTest execute_script
AWT_DnD/XDnD/Automated/Motif_DnD/JavaToNative/DragDropEndTest execute_script
AWT_DnD/XDnD/Automated/Motif_DnD/NativeToJava/DragEnterTest execute_script

TestSuite:
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/net/urts071.india/export9/Testbases/SQE_WS9/1.5.0_UR/awt
Testmachine details:
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Red Hat Enterprise Linux AS release 4 (Nahant Update 3)
Linux urti065.India.Sun.COM 2.6.9-34.EL #1 Fri Feb 24 16:44:51 EST 2006 i686 i686 i386 GNU/Linux
Failure details:
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Please see the attached details.tar file for error/log

Steps to reproduce:
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1. Login to testmachine(urti065.india root password is urt123)
2. Change directory to /export/updates/awt/Test
4. Edit the DISPLAY attribute in TongaSetup.ini file where you would like to set the DISPLAY
3. Execute the below command
<jdk-home>/bin/java -cp /net/urts071.india/export9/Testbases/SQE_WS9/1.5.0_UR/share/harness/tonga/tonga.jar Tonga -iniFile TongaSetup.ini