Checksur.exe has stopped working

Hello all,
I have been running Vista Business 32bits for more than one year now, and I
never had a problem to install an update. In fact, it happened yesterday for
the first time: it's the System Update Readiness Tool (KB947821). Windows
Update starts the installation, there is much disk activity during 1-2
minutes, then an error message: "CheckSUR.exe has stopped working", and
that's all. Nothing more. Windows Update displays a funny "Vista is up to
date", and the list shows " KB947821 failed" (very humorous, that Vista
!...). Check for Updates indicates that no update is found for my computer.
I downloaded the file, stopped the antivirus, and several other
applications, reinstalled, but I still got the same problem.
Some help would be much appreciated
pher

Seeing something similar -

FAULTING_IP:
CheckSUR+3ceb9
006bceb9 832600 and dword ptr [esi],0

EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 006bceb9 (CheckSUR+0x0003ceb9)
ExceptionCode: c00701e7
ExceptionFlags: 00000001
NumberParameters: 0

FAULTING_THREAD: 000011c8

BUGCHECK_STR: c00701e7

DEFAULT_BUCKET_ID: APPLICATION_FAULT

PROCESS_NAME: CheckSUR.exe

ERROR_CODE: (NTSTATUS) 0xc00701e7 - <Unable to get error code text>

NTGLOBALFLAG: 0

APPLICATION_VERIFIER_FLAGS: 0

LAST_CONTROL_TRANSFER: from 006bf9b9 to 006bceb9

STACK_TEXT:
WARNING: Stack unwind information not available. Following frames may be
wrong.
0012f3c8 006bf9b9 0012f3fc 0012f3ef 020c7690 CheckSUR+0x3ceb9
0012f3e4 006c08f6 0012f3fc 00000000 02577980 CheckSUR+0x3f9b9
0012f4b4 006c099c 020c7690 00000000 0012f6d8 CheckSUR+0x408f6
0012f4c8 006c5500 020c7690 00000000 0012f6d8 CheckSUR+0x4099c
0012f6a0 006bfa26 0012f6d8 00000000 0012f6cb CheckSUR+0x45500
0012f6c0 006c08f6 0012f6d8 00000000 0291a210 CheckSUR+0x3fa26
0012f790 006c099c 020c7690 00000000 0012f9b4 CheckSUR+0x408f6
0012f7a4 006c5500 020c7690 00000000 0012f9b4 CheckSUR+0x4099c
0012f97c 006bfa26 0012f9b4 00000000 0012f9a7 CheckSUR+0x45500
0012f99c 006c08f6 0012f9b4 00000000 020c7690 CheckSUR+0x3fa26
0012fa6c 006c099c 020c7690 00000000 020c76a4 CheckSUR+0x408f6
0012fa80 006c51ff 020c7690 00000000 0012fad8 CheckSUR+0x4099c
0012faa0 006bfa26 0012fad8 00000000 0012facb CheckSUR+0x451ff
0012fac0 006c08f6 0012fad8 00000000 0068e7b0 CheckSUR+0x3fa26
0012fb90 006c0966 00000000 00000000 0012fbcc CheckSUR+0x408f6
0012fba0 006bfd4e 00000000 00000000 00000000 CheckSUR+0x40966
0012fbcc 006c5e6d 00000000 0073d8c8 00000001 CheckSUR+0x3fd4e
0012fd80 006c6051 00000000 006b7a02 75edc5af CheckSUR+0x45e6d
0012fdd0 006cd246 00000011 00f207c8 0041a150 CheckSUR+0x46051
0012fe14 75ed4911 7ffd3000 0012fe60 7721e4b6 CheckSUR+0x4d246
0012fe20 7721e4b6 7ffd3000 77312e25 00000000 kernel32!BaseThreadInitThunk+0xe
0012fe60 7721e489 006cd380 7ffd3000 00000000 ntdll!__RtlUserThreadStart+0x23
0012fe78 00000000 006cd380 7ffd3000 00000000 ntdll!_RtlUserThreadStart+0x1b

I am having the same problem with update KB947821. Help!!!

no help so far...
anyway, my computer seems to work fine ...

pher