Winlogon hangs from time to time when shutting down ReactOS

kd> !process 0 0

**** NT ACTIVE PROCESS DUMP ****

PROCESS b1320d88  SessionId: none  Cid: 0004    Peb: 00000000  ParentCid: 0000

    DirBase: 006d1000  ObjectTable: e1000788  HandleCount:  72.

    Image: System

PROCESS b124e7b0  SessionId: none  Cid: 0050    Peb: 7ffdd000  ParentCid: 0004

    DirBase: 0229b000  ObjectTable: e10558f8  HandleCount:  13.

    Image: smss.exe

PROCESS b1172d88  SessionId: 0  Cid: 0080    Peb: 7ffaf000  ParentCid: 0050

    DirBase: 1b901000  ObjectTable: e19b76d0  HandleCount:  44.

    Image: csrss.exe

PROCESS b1157990  SessionId: 0  Cid: 0098    Peb: 7ffd5000  ParentCid: 0050

    DirBase: 1b19a000  ObjectTable: e192bcf8  HandleCount:  33.

    Image: winlogon.exe

kd> !process b1157990

PROCESS b1157990  SessionId: 0  Cid: 0098    Peb: 7ffd5000  ParentCid: 0050

    DirBase: 1b19a000  ObjectTable: e192bcf8  HandleCount:  33.

    Image: winlogon.exe

    VadRoot b1151f38 Vads 196 Clone 0 Private 121. Modified 0. Locked 0.

    DeviceMap b1350080

    Token                             e19c1020

    ElapsedTime                       00:01:45.776

    UserTime                          00:00:00.000

    KernelTime                        00:00:00.074

    QuotaPoolUsage[PagedPool]         0

    QuotaPoolUsage[NonPagedPool]      0

    Working Set Sizes (now,min,max)  (2945024, 0, 300) (11780096KB, 0KB, 1200KB)

    PeakWorkingSetSize                2945024

    VirtualSize                       23 Mb

    PeakVirtualSize                   24 Mb

    PageFaultCount                    0

    MemoryPriority                    BACKGROUND

    BasePriority                      8

    CommitCharge                      66

        THREAD b1156c60  Cid 0098.009c  Teb: 7ffdf000 Win32Thread: b114b008 WAIT: (UserRequest) UserMode Non-Alertable

            b101e5b8  NotificationEvent

            b1156cd8  NotificationTimer

        Not impersonating

        Owning Process            b1157990       Image:         winlogon.exe

        Attached Process          N/A            Image:         N/A

        Wait Start TickCount      4808           Ticks: 2625 (0:00:00:39.362)

        Context Switch Count      160                 LargeStack

        UserTime                  00:00:00.000

        KernelTime                00:00:00.074

        Stack Init f8592000 Current f8591bec Base f8592000 Limit f858e000 Call 0

        Priority 9 BasePriority 8 PriorityDecrement 0

        ChildEBP RetAddr  

        f8591c2c 80488e85 nt!KiSwapContext+0x19

        f8591c94 804d2355 nt!KeWaitForSingleObject+0x425 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\ntoskrnl\ke\wait.c @ 547]

        f8591d00 8050042b nt!NtWaitForSingleObject+0x135 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\ntoskrnl\ob\obwait.c @ 425]

        f8591d1c 804ffacf nt!KiSystemCallTrampoline+0x1b (FPO: [Non-Fpo]) (CONV: cdecl) [d:\rossrc\reactos\ntoskrnl\include\internal\i386\ke.h @ 748]

        f8591d5c 80403e23 nt!KiSystemServiceHandler+0x22f (FPO: [Non-Fpo]) (CONV: fastcall) [d:\rossrc\reactos\ntoskrnl\ke\i386\traphdlr.c @ 1813]

        f8591d5c 7c92eb3e nt!KiFastCallEntry+0x8c (FPO: [0,0] TrapFrame @ f8591d64)

        0012fc2c 7c9558bd ntdll!KiFastSystemCallRet (FPO: [0,0,0])

        0012fc30 7c6a505c ntdll!NtWaitForSingleObject+0xc (FPO: [0,0,0])

        0012fc7c 7c6a4fc4 kernel32!WaitForSingleObjectEx+0x8c (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\dll\win32\kernel32\client\synch.c @ 130]

        0012fc90 7c597af9 kernel32!WaitForSingleObject+0x14 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\dll\win32\kernel32\client\synch.c @ 87]

        0012fca4 7c597be6 advapi32!WaitForSCManager+0x99 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\rossrc\reactos\dll\win32\advapi32\service\scm.c @ 1811]

        0012fcdc 75001d34 advapi32!OpenSCManagerW+0x96 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\dll\win32\advapi32\service\scm.c @ 1879]

        0012fd14 00401c21 wlnotify!SchedEventLogoff+0x2a4 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\dll\win32\wlnotify\schedsvc.c @ 34]

        0012fd50 0040577f winlogon!CallNotificationDlls+0x201 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\rossrc\reactos\base\system\winlogon\notify.c @ 312]

        0012fd74 00404be6 winlogon!HandleLogoff+0x34f (FPO: [Non-Fpo]) (CONV: cdecl) [d:\rossrc\reactos\base\system\winlogon\sas.c @ 913]

        0012fd88 0040485a winlogon!DoGenericAction+0x156 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\rossrc\reactos\base\system\winlogon\sas.c @ 1104]

        0012fdc4 77a8249a winlogon!SASWindowProc+0x49a (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\base\system\winlogon\sas.c @ 1473]

        0012fdf4 77a74fdf user32!CALL_EXTERN_WNDPROC+0x1a (FPO: [0,0,0])

        0012fe90 77a770a0 user32!IntCallWindowProcW+0x4bf (FPO: [Non-Fpo]) (CONV: fastcall) [d:\rossrc\reactos\win32ss\user\user32\windows\message.c @ 1522]

        0012feb8 77a77354 user32!IntCallMessageProc+0x190 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\win32ss\user\user32\windows\message.c @ 1773]

        0012ff0c 00407976 user32!DispatchMessageW+0x1d4 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\win32ss\user\user32\windows\message.c @ 2026]

        0012ff38 0040c200 winlogon!WinMain+0x576 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\rossrc\reactos\base\system\winlogon\winlogon.c @ 476]

        0012ff50 0040bdcc winlogon!main+0x20 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\rossrc\reactos\sdk\lib\crt\startup\crt0_c.c @ 22]

        0012ffe8 0040bb71 winlogon!__tmainCRTStartup+0x24c (FPO: [Non-Fpo]) (CONV: cdecl) [d:\rossrc\reactos\sdk\lib\crt\startup\crtexe.c @ 315]

        0012fff4 00000000 winlogon!WinMainCRTStartup+0x21 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\rossrc\reactos\sdk\lib\crt\startup\crtexe.c @ 172]

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