VMark failed intermittenly when running with tiger b29 -client -Xrunhprof:cpu=samples

The test machine is bigapp-880-1.red.iplanet.com ( 8 cpus * 900MHZ , 16 GB memory )
SunOS bigapp-880-1 5.9 Generic_112233-07 sun4u sparc SUNW,Sun-Fire-880
( contact ###@###.### if you need to get access to the machine )

Java Version:
Java HotSpot(TM) Client VM (build 1.5.0-beta-b29, mixed mode)

core dump is under the result dir /bt/VolanoMarkrun.18521.-client

###@###.### 2003-12-02

Stack trace:

0xff31e42c _lwp_kill + 0x8
0xff2b5c60 abort + 0x100
0xff0149c0 void os::abort(int) + 0x58
0xff086588 void VMError::report_and_die() + 0xc6c
0xfedfe7c4 JVM_handle_solaris_signal + 0x9b0
0xff3861a0 __sighndlr + 0xc
0xff37fed0 call_user_handler + 0x234
0xff380080 sigacthandler + 0x64
0xf949ec08 0xf949ec08 * java.util.Vector.toArray() bci:0 line:656 met
hodOop:0xf383b388 (Compiled frame; information may be imprecise)
0xf948d120 0xf948d120 * java.util.Observable.notifyObservers(java.lan
g.Object) bci:18 line:137 methodOop:0xf3947588 (Compiled frame)
0xf949f6f4 0xf949f6f4 * COM.volano.mby.?(java.lang.Object) bci:2 meth
odOop:0xf39467a8 (Compiled frame)
0xf9499914 0xf9499914 * COM.volano.mby.run() bci:11 methodOop:0xf3946
cd8 (Compiled frame)
0xf9405b2c * java.lang.Thread.run() bci:11 line:567 methodOop:0xf3826b68 (
Interpreted frame)
0xf9400118 <StubRoutines>
0xfecd8138 void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallAr
guments*,Thread*) + 0x548
0xfed037c4 void JavaCalls::call_virtual(JavaValue*,Handle,KlassHandle,symb
olHandle,symbolHandle,Thread*) + 0x18c
0xfed03620 void thread_entry(JavaThread*,Thread*) + 0x12c
0xfed034a4 void JavaThread::run() + 0x260
0xfecd1fec _start + 0x144


###@###.### 2003-12-02