What failed : Test Application's client process.

HW : 2x900Mhz PIII w/ RHEL 4
Flags : -server -Xincgc
Logs : /bt/atgrun.1098.-server
Hostname : jtg-linux7.sfbay please contact submitter for root password.
Build : 20060413162810.dh198349.rt_b81_merge-debug

We were able to reproduce this failure in less than a day.
Live process is still there for someone to take a look at.

Error message :
------------------------------------------------------------------------------

Unexpected Error
------------------------------------------------------------------------------
Internal Error at methodOop.cpp:151, pid=22594, tid=2865122224

Do you want to debug the problem?

To debug, run 'gdb /proc/22594/exe 22594'; then switch to thread -1429845072
Enter 'yes' to launch gdb automatically (PATH must include gdb)
Otherwise, press RETURN to abort...
=============================================================================

backtrace :

(gdb) thread 53
[Switching to thread 53 (Thread -1429845072 (LWP 22657))]#0 0x001847a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
(gdb) where
#0 0x001847a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1 0x0022ad56 in __nanosleep_nocancel () from /lib/tls/libc.so.6
#2 0x0022ab53 in sleep () from /lib/tls/libc.so.6
#3 0x06767f64 in os::message_box () from /usr/j2se/jre/lib/i386/server/libjvm.so
#4 0x068de5b6 in VMError::show_message_box ()
   from /usr/j2se/jre/lib/i386/server/libjvm.so
#5 0x068de10e in VMError::report_and_die ()
   from /usr/j2se/jre/lib/i386/server/libjvm.so
#6 0x063fdfe5 in report_assertion_failure ()
   from /usr/j2se/jre/lib/i386/server/libjvm.so
#7 0x06724615 in methodOopDesc::bci_from ()
   from /usr/j2se/jre/lib/i386/server/libjvm.so
#8 0x064d99a6 in InterpreterRuntime::note_trap ()
   from /usr/j2se/jre/lib/i386/server/libjvm.so
#9 0x064da143 in InterpreterRuntime::create_exception ()
   from /usr/j2se/jre/lib/i386/server/libjvm.so
#10 0xb4f2a098 in ?? ()
#11 0x081e0800 in ?? ()
#12 0x06985c40 in IndexSetIterator::_second_bit ()
   from /usr/j2se/jre/lib/i386/server/libjvm.so
#13 0x00000000 in ?? ()

The following is the earlier crash in this machine with the same App/Build/flags.

Error message :
------------------------------------------------------------------------------

Unexpected Error
------------------------------------------------------------------------------
Internal Error at concurrentMarkSweepGeneration.cpp:4091, pid=22848, tid=2890685360

Do you want to debug the problem?

To debug, run 'gdb /proc/22848/exe 22848'; then switch to thread -1404281936
Enter 'yes' to launch gdb automatically (PATH must include gdb)
Otherwise, press RETURN to abort...
==============================================================================

(gdb) thread 111
[Switching to thread 111 (Thread -1404281936 (LWP 22852))]#0 0x001847a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
(gdb) where
#0 0x001847a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1 0x0022ad56 in __nanosleep_nocancel () from /lib/tls/libc.so.6
#2 0x0022ab53 in sleep () from /lib/tls/libc.so.6
#3 0x06767f64 in os::message_box () from /usr/j2se/jre/lib/i386/server/libjvm.so
#4 0x068de5b6 in VMError::show_message_box () from /usr/j2se/jre/lib/i386/server/libjvm.so
#5 0x068de10e in VMError::report_and_die () from /usr/j2se/jre/lib/i386/server/libjvm.so
#6 0x063fdfe5 in report_assertion_failure () from /usr/j2se/jre/lib/i386/server/libjvm.so
#7 0x063d04e2 in CMSCollector::sample_eden () from /usr/j2se/jre/lib/i386/server/libjvm.so
#8 0x063daf92 in ScanMarkedObjectsAgainCarefullyClosure::do_object_careful_m () from /usr/j2se/jre/lib/i386/server/libjvm.so
#9 0x0639ae6d in CompactibleFreeListSpace::object_iterate_careful_m () from /usr/j2se/jre/lib/i386/server/libjvm.so
#10 0x063d11c5 in CMSCollector::preclean_mod_union_table () from /usr/j2se/jre/lib/i386/server/libjvm.so
#11 0x063d08d9 in CMSCollector::preclean_work () from /usr/j2se/jre/lib/i386/server/libjvm.so
#12 0x063cfe43 in CMSCollector::preclean () from /usr/j2se/jre/lib/i386/server/libjvm.so
#13 0x063c94d2 in CMSCollector::collect_in_background () from /usr/j2se/jre/lib/i386/server/libjvm.so
#14 0x063e4ea0 in ConcurrentMarkSweepThread::run () from /usr/j2se/jre/lib/i386/server/libjvm.so
#15 0x067691a2 in java_start () from /usr/j2se/jre/lib/i386/server/libjvm.so
#16 0x003d73ae in start_thread () from /lib/tls/libpthread.so.0
#17 0x00267aee in clone () from /lib/tls/libc.so.6