The following is a part of nightly report from Dan:

New nsk.jvmti failures (from 2005.11.07)
    nsk/jvmti/scenarios/multienv/MA08/ma08t001
        This test failed due to a status sync timeout on Solaris X86
        Client VM (machine ordmandell). This test was covered by the
        following bug:
            4627997 4/4 JDI testcase crexreq001 failing with -client
                        -Xcomp only, all platforms
        which was fixed in Mustang-B59. The first run failed the same
        way. A status sync timeout usually indicates that the test
        machine is overloaded.
        Update: The test failed on 2005.11.09 on machine kashyyyk.
        Update: The test failed on 2005.11.14 on machine corellia.

Link to the first nightly with this failure:
  http://vmsqe.sfbay.sun.com/nightly/mantis/DTWS/results/11-07-05/report.html

This "TIMED OUT" problem is reproducible but has an intermittent nature.

There is ma08t001.tlog below:

#!/usr/bin/sh

CLASSPATH=/net/vmsqe.sfbay/export/pit/log/NIGHTLY/11-07-05/ClientVM/solx86/Work/nsk.jvmti-NIGHTLY-Serv_Baseline-ClientVM-comp-solx86-2005-11-07-13-56-14/run2/fhsu.Solaris.x86/ma08t001:/net/vmsqe.sfbay/export/backup/testbase/testbase_vm.1.6_r02/vm/bin/classes:/net/vmsqe.sfbay/export/nightly/mantis/JDK/service_hs_baseline/jdk1.6/solaris-i586/lib/tools.jar
HOME=/home/fhsu
RAS_OPTIONS=
LD_LIBRARY_PATH=/net/vmsqe.sfbay/export/backup/testbase/testbase_vm.1.6_r02/vm/bin/lib/intel/nsk/jvmti/scenarios/multienv/MA08:/net/vmsqe.sfbay/export/backup/testbase/testbase_vm.1.6_r02/vm/src/nsk/share/lib/intel:/net/vmsqe.sfbay/export/nightly/mantis/JDK/service_hs_baseline/jdk1.6/solaris-i586/jre/lib/i386/client
PATH=/net/vmsqe.sfbay/export/nightly/mantis/JDK/service_hs_baseline/jdk1.6/solaris-i586/bin:/net/vmsqe.sfbay/export/nightly/mantis/JDK/service_hs_baseline/jdk1.6/solaris-i586/jre/bin:/bin:/usr/bin:/net/vmsqe.sfbay/export/nightly/mantis/JDK/service_hs_baseline/jdk1.6/solaris-i586/jre/bin
DISPLAY=vmsqe.sfbay:0.0
SHELL=/usr/bin/sh

while [ $# -gt 0 ];
do
  if [ $1 = "-jdk" ]; then
shift 1
PATH=${1}/bin:${PATH}
shift 1
  else
if [ $1 = "-d" ]; then
shift 1
if [ $# -gt 0 ]; then
DISPLAY=$1
shift 1
else
DISPLAY=:0.0
fi
fi
  fi
done

export CLASSPATH
export HOME
export RAS_OPTIONS
export LD_LIBRARY_PATH
export PATH
export DISPLAY
export SHELL

#annotate TEST javaopt=-client -Xcomp -agentlib:ma08t001=-waittime=2 -agentlib:ma08t001a=-waittime=2
/net/vmsqe.sfbay/export/nightly/mantis/JDK/service_hs_baseline/jdk1.6/solaris-i586/bin/java -client -Xcomp -DHANGINGJAVA9455 -agentlib:ma08t001=-waittime=2 -agentlib:ma08t001a=-waittime=2 nsk.jvmti.scenarios.multienv.MA08.ma08t001
##Exit status of execution step=143
##Test timed out
##!checkExitCode

## ERROR: agent_tools.c, 273: No status sync occured for timeout: 120000 ms
## ERROR: agent_tools.c, 273: No status sync occured for timeout: 120000 ms

#TONGA: TIMED OUT nsk/jvmti/scenarios/multienv/MA08/ma08t001 execute_positive

The test failure is well reproduced on Solaris x86 machines: corellia and others.

I also checked and found that this bug is not a manifestation of the CR:
   6345274 ATG client failure due to bad immediate dominator info

The CR 6345274 was fixed in the HotSpot b61.
So, I checked that the test is still failed intermittently on the build b61.
In a case it can be useful the following is the pstack dump for hanging process:

ss45998@mho pstack 5847 | c++filt
5847: /java/re/jdk/1.6.0/promoted/all/b61/binaries/solaris-i586/bin/java -cl
----------------- lwp# 1 / thread# 1 --------------------
 fef6e087 lwp_wait (2, 8046d00)
 fef6a2f0 _thrp_join (2, 0, 8046d50, 1) + 5a
 fef6a432 thr_join (2, 0, 8046d50) + 20
 08059787 ContinueInNewThread (8052460, 50000, 0, 80475f8, 80475b0) + 4f
 08051ff0 main (0, 8073260, 8047690) + afc
 08051466 _start (6, 80477a4, 80477e7, 80477ef, 80477f7, 8047816) + 7a
----------------- lwp# 2 / thread# 2 --------------------
 fef6e127 lwp_cond_wait (80793d0, 80793b8, fe83b988, 0)
 fef5b59f _lwp_cond_timedwait (80793d0, 80793b8, fe83b9b8) + 35
 fec9af0f int PlatformEvent::park(long long) (8079388, 1d4c0, 0) + e3
 fecdeb73 void ObjectMonitor::wait(long long,bool,Thread*) (8170188, 1d4c0, 0, 1, 8078900) + 2cf
 feaa373b void ObjectSynchronizer::wait(Handle,long long,Thread*) (8078f0c, 1d4c0, 0, 8078900, 1a1) + df
 feaa3462 JVM_MonitorWait (80789e4, fe83bb98, 1d4c0, 0, 80789e4, 8078f34) + 1fa
 fc609e0a ???????? (0, fc608019, 1d4c0, 0, f44510f8, 3)
 fc602e9d ???????? (1d4c0, 0, 0, 0, a2976d11, 107)
 fc602e9d ???????? (0, f4403e98, f4438e98, f4438ea8, fe83bc28, f85805d1)
 fc602d79 ???????? (f4403e98, f4438e98, fe83bc58, f8580534, fe83bc80, f8584030)
 fc602d79 ???????? (f4438e98, 8078900, 8078f04, 1f80, fedde000, 1)
 fc600202 ???????? (fe83bcd0, fe83bedc, a, f8580548, fc609020, fe83bdd4)
 fea990f3 void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (fe83bed8, fe83bda4, fe83bdd0, 8078900) + 1a3
 fea98f47 void os::os_exception_wrapper(void(*)(JavaValue*,methodHandle*,JavaCallArguments*,Thread*),JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (fea98f50, fe83bed8, fe83bda4, fe83bdd0, 8078900) + 27
 fea98f17 void JavaCalls::call(JavaValue*,methodHandle,JavaCallArguments*,Thread*) (fe83bed8, 8078f04, fe83bdd0, 8078900) + 2f
 feaa5ef7 void jni_invoke_static(JNIEnv_*,JavaValue*,_jobject*,JNICallType,_jmethodID*,JNI_ArgumentPusher*,Thread*) (80789e4, fe83bed8, 0, 0, 8176299, fe83bee4) + 1e7
 feadb490 jni_CallStaticVoidMethod (80789e4, 80794dc, 8176299, 80794ec) + 18c
 08053001 JavaMain (80475f8) + ba1
 fef6d02f _thr_setup (feec2400) + 4e
 fef6d320 _lwp_start (feec2400, 0, 0, fe83bff8, fef6d320, feec2400)
----------------- lwp# 3 / thread# 3 --------------------
 fef6e127 lwp_cond_wait (8077e40, 8077e28, fe64da68, 0)
 fef5b59f _lwp_cond_timedwait (8077e40, 8077e28, fe64da98) + 35
 fec905a6 bool Monitor::wait(bool,long) (8077dd0, 1, 3e8) + 496
 fea97e65 void VMThread::loop() (8163100) + 101
 fea97cc0 void VMThread::run() (8163100) + 88
 fec97ba3 java_start (8163100) + d3
 fef6d02f _thr_setup (fc4e0000) + 4e
 fef6d320 _lwp_start (fc4e0000, 0, 0, fe64dff8, fef6d320, fc4e0000)
----------------- lwp# 4 / thread# 4 --------------------
 fef6e127 lwp_cond_wait (8166e58, 8166e40, 0, 0)
 fec9adb1 void PlatformEvent::park() (8166e10) + a9
 fecdeb86 void ObjectMonitor::wait(long long,bool,Thread*) (817005c, 0, 0, 1, 8166400) + 2e2
 feaa373b void ObjectSynchronizer::wait(Handle,long long,Thread*) (8166a2c, 0, 0, 8166400, 191) + df
 feaa3462 JVM_MonitorWait (81664e4, fc4dd8b0, 0, 0, 111, 0) + 1fa
 fc609e0a ???????? (0, fc608019, 0, 0, f44009f0, fc4dd8b4)
 fc602e9d ???????? (f44009f0, 1, f44009f0, fc4dd8e0, f848703e, fc4dd920)
 fc602e9d ???????? (0, 0, f44009f0, 0, f44009f8, 8166400)
 fc600202 ???????? (fc4dd970, fc4ddbc8, a, f8487098, fc609020, fc4ddad8)
 fea990f3 void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (fc4ddbc4, fc4dda48, fc4ddad4, 8166400) + 1a3
 fea98f47 void os::os_exception_wrapper(void(*)(JavaValue*,methodHandle*,JavaCallArguments*,Thread*),JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (fea98f50, fc4ddbc4, fc4dda48, fc4ddad4, 8166400) + 27
 fea98f17 void JavaCalls::call(JavaValue*,methodHandle,JavaCallArguments*,Thread*) (fc4ddbc4, 8166a28, fc4ddad4, 8166400) + 2f
 feaa31b1 void JavaCalls::call_virtual(JavaValue*,KlassHandle,symbolHandle,symbolHandle,JavaCallArguments*,Thread*) (fc4ddbc4, 8166a1c, fee017c4, fee018a4, fc4ddad4, 8166400) + c1
 feaa30ea void JavaCalls::call_virtual(JavaValue*,Handle,KlassHandle,symbolHandle,symbolHandle,Thread*) (fc4ddbc4, 8166a18, 8166a1c, fee017c4, fee018a4, 8166400) + 7e
 feaa3056 void thread_entry(JavaThread*,Thread*) (8166400, 8166400) + d2
 feaa2ea4 void JavaThread::thread_main_inner() (8166400) + 4c
 feaa2e4d void JavaThread::run() (8166400) + 189
 fec97ba3 java_start (8166400) + d3
 fef6d02f _thr_setup (fc4e0400) + 4e
 fef6d320 _lwp_start (fc4e0400, 0, 0, fc4ddff8, fef6d320, fc4e0400)
----------------- lwp# 5 / thread# 5 --------------------
 fef6e127 lwp_cond_wait (8167bb0, 8167b98, 0, 0)
 fec9adb1 void PlatformEvent::park() (8167b68) + a9
 fecdeb86 void ObjectMonitor::wait(long long,bool,Thread*) (816fff8, 0, 0, 1, 8167100) + 2e2
 feaa373b void ObjectSynchronizer::wait(Handle,long long,Thread*) (8167724, 0, 0, 8167100, 191) + df
 feaa3462 JVM_MonitorWait (81671e4, fc48b8fc, 0, 0, 8167744, fc48b8c4) + 1fa
 fc609e0a ???????? (0, fc608019, 0, 0, f4400af0, 1)
 fc602e9d ???????? (0, 0, f4400af0, 0, 0, f4400ad8)
 fc602d37 ???????? (f4400ad8, fc48b974, f8487973, fc48b9a0, f8487c08, 0)
 fc602d37 ???????? (0, f4400b00, 8167100, 8167720, 1f80, fedde000)
 fc600202 ???????? (fc48b9f0, fc48bc48, a, f8487990, fc609020, fc48bb58)
 fea990f3 void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (fc48bc44, fc48bac8, fc48bb54, 8167100) + 1a3
 fea98f47 void os::os_exception_wrapper(void(*)(JavaValue*,methodHandle*,JavaCallArguments*,Thread*),JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (fea98f50, fc48bc44, fc48bac8, fc48bb54, 8167100) + 27
 fea98f17 void JavaCalls::call(JavaValue*,methodHandle,JavaCallArguments*,Thread*) (fc48bc44, 8167720, fc48bb54, 8167100) + 2f
 feaa31b1 void JavaCalls::call_virtual(JavaValue*,KlassHandle,symbolHandle,symbolHandle,JavaCallArguments*,Thread*) (fc48bc44, 8167714, fee017c4, fee018a4, fc48bb54, 8167100) + c1
 feaa30ea void JavaCalls::call_virtual(JavaValue*,Handle,KlassHandle,symbolHandle,symbolHandle,Thread*) (fc48bc44, 8167710, 8167714, fee017c4, fee018a4, 8167100) + 7e
 feaa3056 void thread_entry(JavaThread*,Thread*) (8167100, 8167100) + d2
 feaa2ea4 void JavaThread::thread_main_inner() (8167100) + 4c
 feaa2e4d void JavaThread::run() (8167100) + 189
 fec97ba3 java_start (8167100) + d3
 fef6d02f _thr_setup (fc4e0800) + 4e
 fef6d320 _lwp_start (fc4e0800, 0, 0, fc48bff8, fef6d320, fc4e0800)
----------------- lwp# 6 / thread# 6 --------------------
 fef6d37b lwp_park (0, 0, 0)
 fef63490 sema_wait (fedfe4b0) + d
 fec98e84 int check_pending_signals(bool) (1) + 15c
 feab72b9 int os::signal_wait() (f4283d08, 8181800, fedde000, 0, 0, 0) + d
 feab6fba void signal_thread_entry(JavaThread*,Thread*) (8181800, 8181800) + 2e
 feaa2ea4 void JavaThread::thread_main_inner() (8181800) + 4c
 feaa2e4d void JavaThread::run() (8181800) + 189
 fec97ba3 java_start (8181800) + d3
 fef6d02f _thr_setup (fc4e0c00) + 4e
 fef6d320 _lwp_start (fc4e0c00, 0, 0, f4283ff8, fef6d320, fc4e0c00)
----------------- lwp# 7 / thread# 7 --------------------
 fef6e127 lwp_cond_wait (80786b0, 8078698, 0, 0)
 fec903c9 bool Monitor::wait(bool,long) (8078640, 0, 0) + 2b9
 feab76a6 CompileTask*CompileQueue::get() (817c630) + 3e
 feab74a3 void CompileBroker::compiler_thread_loop() (fedde000, 98, f4231dc8, feaa2ea4, 8182600, 8182600) + 1c7
 feab72d8 void compiler_thread_entry(JavaThread*,Thread*) (8182600, 8182600) + 18
 feaa2ea4 void JavaThread::thread_main_inner() (8182600) + 4c
 feaa2e4d void JavaThread::run() (8182600) + 189
 fec97ba3 java_start (8182600) + d3
 fef6d02f _thr_setup (fc4e1000) + 4e
 fef6d320 _lwp_start (fc4e1000, 0, 0, f4231ff8, fef6d320, fc4e1000)
----------------- lwp# 8 / thread# 8 --------------------
 fef6e127 lwp_cond_wait (80774b0, 8077498, 0, 0)
 fec905c8 bool Monitor::wait(bool,long) (8077440, 1, 0) + 4b8
 feaba7a8 void LowMemoryDetector::low_memory_detector_thread_entry(JavaThread*,Thread*) (8183e00, 8183e00) + f0
 feaa2ea4 void JavaThread::thread_main_inner() (8183e00) + 4c
 feaa2e4d void JavaThread::run() (8183e00) + 189
 fec97ba3 java_start (8183e00) + d3
 fef6d02f _thr_setup (fc4e1400) + 4e
 fef6d320 _lwp_start (fc4e1400, 0, 0, f41efff8, fef6d320, fc4e1400)
----------------- lwp# 9 / thread# 9 --------------------
 fef6dd57 pollsys (0, 0, f419ddf0, 0)
 fef185ca poll (0, 0, 32) + 52
 fec99917 int os_sleep(long long,bool) (32, 0, 0, 8185200) + 177
 fec99bdf int os::sleep(Thread*,long long,bool) (8185200, 32, 0, 0, feab84ba) + 16f
 feab84cb void WatcherThread::run() (8185200) + bb
 fec97ba3 java_start (8185200) + d3
 fef6d02f _thr_setup (fc4e1800) + 4e
 fef6d320 _lwp_start (fc4e1800, 0, 0, f419dff8, fef6d320, fc4e1800)
----------------- lwp# 10 / thread# 10 --------------------
 fece9368 int JavaThread::java_suspend_self() (81a2c00) + 4c
 feaba0a0 void ObjectMonitor::enter(Thread*) (8170188, 81a2c00) + 2d4
 fecded03 void ObjectMonitor::wait(long long,bool,Thread*) (8170188, 1d4c0, 0, 1, 81a2c00) + 45f
 feaa373b void ObjectSynchronizer::wait(Handle,long long,Thread*) (818748c, 1d4c0, 0, 81a2c00, 1a1) + df
 feaa3462 JVM_MonitorWait (81a2ce4, f415bbe8, 1d4c0, 0, f415bb00, 81874d0) + 1fa
 fc609e0a ???????? (0, fc608019, 1d4c0, 0, f44510f8, 1)
 fc602e9d ???????? (0, f44510f8, 81a2c00, 8187488, 1f80, fedde000)
 fc600202 ???????? (f415bc70, f415bec8, a, f858c780, fc609200, f415bdd8)
 fea990f3 void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (f415bec4, f415bd48, f415bdd4, 81a2c00) + 1a3
 fea98f47 void os::os_exception_wrapper(void(*)(JavaValue*,methodHandle*,JavaCallArguments*,Thread*),JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (fea98f50, f415bec4, f415bd48, f415bdd4, 81a2c00) + 27
 fea98f17 void JavaCalls::call(JavaValue*,methodHandle,JavaCallArguments*,Thread*) (f415bec4, 8187488, f415bdd4, 81a2c00) + 2f
 feaa31b1 void JavaCalls::call_virtual(JavaValue*,KlassHandle,symbolHandle,symbolHandle,JavaCallArguments*,Thread*) (f415bec4, 818747c, fee017c4, fee018a4, f415bdd4, 81a2c00) + c1
 feaa30ea void JavaCalls::call_virtual(JavaValue*,Handle,KlassHandle,symbolHandle,symbolHandle,Thread*) (f415bec4, 8187478, 818747c, fee017c4, fee018a4, 81a2c00) + 7e
 feaa3056 void thread_entry(JavaThread*,Thread*) (81a2c00, 81a2c00) + d2
 feaa2ea4 void JavaThread::thread_main_inner() (81a2c00) + 4c
 feaa2e4d void JavaThread::run() (81a2c00) + 189
 fec97ba3 java_start (81a2c00) + d3
 fef6d02f _thr_setup (fc4e1c00) + 4e
 fef6d320 _lwp_start (fc4e1c00, 0, 0, f415bff8, fef6d320, fc4e1c00)
----------------- lwp# 12 / thread# 12 --------------------
 fef6d637 nanosleep (f40b7ae0, f40b7ae8)
 fe724a78 THREAD_sleep (1) + 30
 fe72a812 nsk_jvmti_sleep (3e8, 0) + 5a
 fe72aaf9 nsk_jvmti_waitForSync (1d4c0, 0) + b1
 fe723fa6 agentProc (8075d10, 81c11e4, 0) + 9e
 fe72a17e agentThreadWrapper (8075d10, 81c11e4, 0) + 86
 fec6729b void JvmtiAgentThread::call_start_function() (81c1100) + af
 fec671e3 void JvmtiAgentThread::start_function_wrapper(JavaThread*,Thread*) (81c1100, 81c1100) + 1b
 feaa2ea4 void JavaThread::thread_main_inner() (81c1100) + 4c
 feaa2e4d void JavaThread::run() (81c1100) + 189
 fec97ba3 java_start (81c1100) + d3
 fef6d02f _thr_setup (fc4e2400) + 4e
 fef6d320 _lwp_start (fc4e2400, 0, 0, f40b7ff8, fef6d320, fc4e2400)
----------------- lwp# 13 / thread# 13 --------------------
 fef6d637 nanosleep (f4065b58, f4065b60)
 fe7545e8 THREAD_sleep (1) + 30
 fe75a382 nsk_jvmti_sleep (3e8, 0) + 5a
 fe75a669 nsk_jvmti_waitForSync (1d4c0, 0) + b1
 fe753db2 agentProc (8075c20, 81c2ce4, 0) + 2e2
 fe759cee agentThreadWrapper (8075c20, 81c2ce4, 0) + 86
 fec6729b void JvmtiAgentThread::call_start_function() (81c2c00) + af
 fec671e3 void JvmtiAgentThread::start_function_wrapper(JavaThread*,Thread*) (81c2c00, 81c2c00) + 1b
 feaa2ea4 void JavaThread::thread_main_inner() (81c2c00) + 4c
 feaa2e4d void JavaThread::run() (81c2c00) + 189
 fec97ba3 java_start (81c2c00) + d3
 fef6d02f _thr_setup (fc4e2800) + 4e
 fef6d320 _lwp_start (fc4e2800, 0, 0, f4065ff8, fef6d320, fc4e2800)
ss45998@mho