The mustang build 73 of the java VM crashes when starting it on Solaris 10 x86 on an Intel Pentium machine:

os136802@khepri07:~> /usr/local/java/jdk1.6.0_b73/bin/java
#
# An unexpected error has been detected by Java Runtime Environment:
#
#  Internal Error (524553544F52450E435050005F), pid=1373, tid=2
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0-beta2-b73 mixed mode, sharing)
# An error report file with more information is saved as hs_err_pid1373.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#
Abort (core dumped)

The hs_err_pid1373.log file contains:

os136802@khepri07:~> less hs_err_pid1373.log
#
# An unexpected error has been detected by Java Runtime Environment:
#
#  Internal Error (524553544F52450E435050005F), pid=1373, tid=2
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0-beta2-b73 mixed mode, sharing)
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#

---------------  T H R E A D  ---------------

Current thread (0x0806fc00):  JavaThread  [_thread_in_vm, id=2]

Stack: [0xd077c000,0xd07cc000),  sp=0xd07cbc38,  free space=319k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)

[error occurred during error reporting, step 120, id 0xb]


---------------  P R O C E S S  ---------------

Java Threads: ( => current thread )

Other Threads:

VM state:not at safepoint (not fully initilizated)

VM Mutex/Monitor currently owned by a thread: None

Heap
 def new generation   total 960K, used 0K [0x92800000, 0x92900000, 0x92ce0000)
  eden space 896K,   0% used [0x92800000, 0x92800000, 0x928e0000)
  from space 64K,   0% used [0x928e0000, 0x928e0000, 0x928f0000)
  to   space 64K,   0% used [0x928f0000, 0x928f0000, 0x92900000)
 tenured generation   total 4096K, used 0K [0x92ce0000, 0x930e0000, 0x96800000)
   the space 4096K,   0% used [0x92ce0000, 0x92ce0000, 0x92ce0200, 0x930e0000)
 compacting perm gen  total 12288K, used 0K [0x96800000, 0x97400000, 0x9a800000)   the space 12288K,   0% used [0x96800000, 0x96800000, 0x96800200, 0x97400000)
    ro space 8192K,  81% used [0x9a800000, 0x9ae7d2c0, 0x9a800200, 0x9b000000)
    rw space 12288K,  63% used [0x9b000000, 0x9b7a9cc8, 0x9b000200, 0x9bc00000)

Dynamic libraries:
0x08050000      /usr/local/java/jdk1.6.0_b73/bin/java
0xd0fb0000      /usr/lib/libthread.so.1
0xd0f80000      /usr/local/java/jdk1.6.0_b73/bin/../jre/lib/i386/jli/libjli.so
0xd0fc0000      /usr/lib/libdl.so.1
0xd0e90000      /usr/lib/libc.so.1
0xd0800000      /usr/local/java/jdk1.6.0_b73/jre/lib/i386/client/libjvm.so
0xd0e50000      /usr/lib/libsocket.so.1
0xd0e70000      /usr/lib/libsched.so.1
0xd0e00000      /usr/lib/libCrun.so.1
0xd0de0000      /usr/lib/libm.so.1
0xd0dc0000      /usr/lib/libdoor.so.1
0xd0d20000      /usr/lib/libnsl.so.1
0xd0cc0000      /usr/lib/libm.so.2
0xd0c90000      /usr/lib/libscf.so.1
0xd0c60000      /usr/lib/libuutil.so.1
0xd0c40000      /usr/lib/libmd5.so.1
0xd07e0000      /usr/lib/libmp.so.2
0xd0720000      /usr/local/java/jdk1.6.0_b73/jre/lib/i386/native_threads/libhpi.so
0xd06e0000      /usr/local/java/jdk1.6.0_b73/jre/lib/i386/libverify.so
0xd0690000      /usr/local/java/jdk1.6.0_b73/jre/lib/i386/libjava.so
0xd0660000      /usr/local/java/jdk1.6.0_b73/jre/lib/i386/libzip.so

VM Arguments:
java_command: <unknown>
Launcher Type: SUN_STANDARD

Environment Variables:
JAVA_HOME=/usr/local/java/jdk1.4
PATH=/home/os136802/bin:/usr/local/share/java/apache-ant-1.6.2/bin:/usr/bin:/usr/ucb:/bin:/usr/bin:/usr/sbin:/usr/ccs/bin:/usr/local/bin:/usr/local/frame/bin:/opt/SUNWspro8/bin:/opt/SUNWspro70/bin:/opt/SUNWspro61/bin:/usr/openwin/bin:/usr/dt/bin:/usr/local/etc:/usr/local/java/jdk/bin:/usr/local/java/ant/bin:/local/lib/ICAClient:/usr/local/teTeX/bin/i386-pc-solaris2.9
LD_LIBRARY_PATH=/usr/local/java/jdk1.6.0_b73/jre/lib/i386/client:/usr/local/java/jdk1.6.0_b73/jre/lib/i386:/usr/local/java/jdk1.6.0_b73/jre/../lib/i386:/usr/openwin/lib:/usr/lib:/usr/local/lib:/usr/local/pgsql/lib
SHELL=/bin/tcsh
DISPLAY=localhost:10.0
HOSTTYPE=i386
OSTYPE=solaris
MACHTYPE=i386

Signal Handlers:
SIGSEGV: [libjvm.so+0x31c76c], sa_mask[0]=0xffbffeff, sa_flags=0x0000000c
SIGBUS: [libjvm.so+0x31c76c], sa_mask[0]=0xffbffeff, sa_flags=0x0000000c
SIGFPE: [libjvm.so+0x10a7a0], sa_mask[0]=0xffbffeff, sa_flags=0x0000000c
SIGPIPE: [libjvm.so+0x10a7a0], sa_mask[0]=0xffbffeff, sa_flags=0x0000000c
SIGILL: [libjvm.so+0x10a7a0], sa_mask[0]=0xffbffeff, sa_flags=0x0000000c
SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGUSR2: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGHUP: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGINT: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGQUIT: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGTERM: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGQUIT: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGTERM: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIG39: [libjvm.so+0x2a24a0], sa_mask[0]=0x00000000, sa_flags=0x00000008
SIG40: [libjvm.so+0x10a7a0], sa_mask[0]=0xffbffeff, sa_flags=0x0000000c


---------------  S Y S T E M  ---------------

OS:                        Solaris 10 1/06 s10x_u1wos_19a X86
           Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.
                        Use is subject to license terms.
                           Assembled 07 December 2005

uname:SunOS 5.10 Generic_118844-28 i86pc  (T2 libthread)
rlimit: STACK 8480k, CORE infinity, NOFILE 65536, AS infinity
load average:0.09 0.09 0.09

CPU:total 1 family 15, cmov, cx8, fxsr, mmx, sse, sse2

Memory: 4k page, physical 1048124k(139996k free)

vm_info: Java HotSpot(TM) Client VM (1.6.0-beta2-b73) for solaris-x86, built on
Feb 23 2006 00:56:22 by "" with unknown Workshop:0x580

os136802@khepri07:~>

Note 1: this problem is reproducable on several machines running Intel Pentium 4 processors. But when trying
        it on a similar machine running an AMD processor the problem does not occur.

Note 2: the problem is reproducable and a core file can be provided if requested.