RAS: Vtest server hang after 18 hrs 51 mins in merlin_b71 c1 on linux redhat 7.1

JDK version
=============
java version "1.4.0-beta3"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta3-b81)
Java HotSpot(TM) Server VM (build 1.4.0-beta3-b81, mixed mode)

Platform
=============
Linux jtg-linux15 2.4.2-2 #1

Error message
=============
Unexpected error for Test18 in Room7 (java.lang.OutOfMemoryError: unable to crea
te new native thread).

Notes
=============
please check http://jtgb4u4c.sfbay/bigapps for test results tables

How to reproduce bug:
telnet to the hosts shown in web for linux test machine with root/[host name] as id/passwd
goto /bt to execute script and /bs to get the running results
for example:
telnet to jtg-i114 with root/jtg-i114 as id/passwd
execute /bs/runatg.ksh -server
cd to /bt/atgxxx.xxx-server to get the results
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