Sleep(1000) иногда крашит программу у одного юзера

0421febc 7c90d21a 7c8023f1 00000000 0421fef0 ntdll!KiFastSystemCallRet
0421fec0 7c8023f1 00000000 0421fef0 10005bb8 ntdll!NtDelayExecution+0xc
0421ff18 7c802455 000003e8 00000000 0421ff74 kernel32!SleepEx+0x61
0421ff28 100013ba 000003e8 0000027f 00000000 kernel32!Sleep+0xf
0421ff74 785432a3 00000000 113115bf 10005bb8 MyProgram_10000000!my_thread_func+0x36 [N:\MyProgram\MyProgram.cpp @ 298]
0421ffac 7854332b 0421ffec 7c80b729 00c05308 msvcr90!_callthreadstart+0x1b [f:\dd\vctools\crt_bld\self_x86\crt\src\thread.c @ 293]
0421ffb4 7c80b729 00c05308 10005bb8 00c02d50 msvcr90!_threadstart+0x5d [f:\dd\vctools\crt_bld\self_x86\crt\src\thread.c @ 275]
0421ffec 00000000 785432ce 00c05308 00000000 kernel32!BaseThreadStart+0x37

FOLLOWUP_IP:
MyProgram_10000000!my_thread_func+36 [N:\MyProgram\MyProgram.cpp @ 298]
100013ba 0fb605ac7f0010 movzx eax,byte ptr [MyProgram_10000000!has_thread (10007fac)]
FAULTING_SOURCE_CODE:
296: {
297: Sleep(1000);
> 298: if(!has_thread)

eax=000000c0 ebx=00000000 ecx=e977a323 edx=00000000 esi=00000000 edi=0421fef0
eip=7c90e514 esp=0421fec0 ebp=0421ff18 iopl=0 nv up ei pl nz na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000206
ntdll!KiFastSystemCallRet:
7c90e514 c3 ret


FAULTING_IP:
+152952f008edf74
00000000 ?? ???

EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 00000000
ExceptionCode: 80000003 (Break instruction exception)
ExceptionFlags: 00000000
NumberParameters: 0

FAULTING_THREAD: 00000e40

DEFAULT_BUCKET_ID: STATUS_BREAKPOINT

PROCESS_NAME: MyProgram.exe

ERROR_CODE: (NTSTATUS) 0x80000003 - {

EXCEPTION_CODE: (HRESULT) 0x80000003 (2147483651) - <Unable to get error code text>

NTGLOBALFLAG: 0

APPLICATION_VERIFIER_FLAGS: 0

PRIMARY_PROBLEM_CLASS: STATUS_BREAKPOINT

BUGCHECK_STR: APPLICATION_FAULT_STATUS_BREAKPOINT

LAST_CONTROL_TRANSFER: from 7c90d21a to 7c90e514

> .ecxr
Minidump doesn't have an exception context
Unable to get exception context, HRESULT 0x80004002

0:000> !dumpstack -EE
No export dumpstack found
0:000> r
eax=000000c0 ebx=00000000 ecx=e977a323 edx=00000000 esi=00000000 edi=0421fef0
eip=7c90e514 esp=0421fec0 ebp=0421ff18 iopl=0 nv up ei pl nz na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000206
ntdll!KiFastSystemCallRet:
7c90e514 c3 ret
0:000> !address eip
7c900000 : 7c901000 - 0007d000
Type 01000000 MEM_IMAGE
Protect 00000020 PAGE_EXECUTE_READ
State 00001000 MEM_COMMIT
Usage RegionUsageImage
FullPath C:\WINDOWS\system32\ntdll.dll
0:000> ub eip
ntdll!KiRaiseUserExceptionDispatcher+0x38:
7c90e500 0424 add al,24h
7c90e502 8be5 mov esp,ebp
7c90e504 5d pop ebp
7c90e505 c3 ret
7c90e506 8da42400000000 lea esp,[esp]
7c90e50d 8d4900 lea ecx,[ecx]
ntdll!KiFastSystemCall:
7c90e510 8bd4 mov edx,esp
7c90e512 0f34 sysenter