Occasional crashes in Vbox, 2nd stage

I started getting those not so long ago, surely after rev. 40000, as i suspect, after 40100. Happens on 2nd stage, only when welcome screen is displayed.

err:(dll\win32\setupapi\queue.c:1659) copy error 2 L"C:\\ReactOS\\inf
atapi.sys" -> L"C:\\ReactOS\\System32\\drivers
atapi.sys"

• • • Fatal System Error: 0x000000d1
      (0x8181A578,0xFC9C81FC,0x815D1A80,0xFFDFF120)

PuTTYEntered debugger on embedded INT3 at 0x0008:0x808c1f18.
kdb:> bt
Eip:
<NTOSKRNL.EXE:c1f19 (lib\rtl\i386\debug_asm.S:42 (RtlpBreakWithStatusInstruction))>
Frames:
<NTOSKRNL.EXE:6739 (ntoskrnl/ke/bug.c:1089 (KeBugCheckWithTf@24))>
<NTOSKRNL.EXE:bc929 (ntoskrnl\ke\i386\trap.s:2048 (KiTrap14))>
<NTOSKRNL.EXE:82a7 (include/ddk/winddk.h:6042 (@KiRetireDpcList@4))>
<NTOSKRNL.EXE:bd844 (ntoskrnl\ke\i386\trap.s:2427 (KiDispatchInterrupt@0))>
<HAL.DLL:4f46 (hal\halx86\generic\irq.S:490 (@KfLowerIrql@4))>
<NTOSKRNL.EXE:113aa (ntoskrnl/ke/wait.c:813 (KeWaitForMultipleObjects@32))>
<win32k.sys:71cc3 (subsystems/win32/win32k/ntuser/msgqueue.c:533 (co_MsqPeekHardwareMessage@24))>
<win32k.sys:72d49 (subsystems/win32/win32k/ntuser/msgqueue.c:1340 (co_MsqFindMessage@28))>
<win32k.sys:6dfa5 (subsystems/win32/win32k/ntuser/message.c:817 (@co_IntPeekMessage@20))>
<win32k.sys:6e479 (subsystems/win32/win32k/ntuser/message.c:1076 (@co_IntWaitMessage@12))>
<win32k.sys:6e4eb (subsystems/win32/win32k/ntuser/message.c:1187 (NtUserGetMessage@16))>
<NTOSKRNL.EXE:ba510 (ntoskrnl\ke\i386\trap.s:244 (KiFastCallEntry))>
<ntdll.dll:6159 (dll\ntdll\dispatch\i386\dispatch.S:250 (KiIntSystemCall@0))>
<winlogon.exe:3352 (base/system/winlogon/winlogon.c:325 (WinMain@16))>
<winlogon.exe:4e34 (lib/3rdparty/mingw/crt0_c.c:12 (main))>
<winlogon.exe:4c07 (lib/3rdparty/mingw/crtexe.c:262 (__tmainCRTStartup))>
<winlogon.exe:4d2b (lib/3rdparty/mingw/crtexe.c:155 (WinMainCRTStartup))>
<00000000>
kdb:> cont

• • • DPC routine > 1 sec — This is not a break in KeUpdateSystemTime
      Entered debugger on embedded INT3 at 0x0008:0x808c1f12.
      kdb:> cont

• • • DPC routine > 1 sec — This is not a break in KeUpdateSystemTime
      Entered debugger on embedded INT3 at 0x0008:0x808c1f12.
      kdb:>