Ros crashes if you kill csrss.exe

Official 42133.
Open task manager, if you kill csrss.exe ros crashes, inspired by
http://www.youtube.com/watch?v=3OoVqHDttVU.

csrss.exe can't be killed in xp, you get a message saying it's a critical process and it can't be terminated.

Memory at 0x808FA7B7 could not be read: Page not present.
kdb:> bt
Eip:
<win32k.sys:72253 (subsystems/win32/win32k/ntuser/msgqueue.c:307 (co_MsqTranslateMouseMessage@44))>
Frames:
<win32k.sys:72af3 (subsystems/win32/win32k/ntuser/msgqueue.c:664 (co_MsqPeekHardwareMessage@24))>
<win32k.sys:737ed (subsystems/win32/win32k/ntuser/msgqueue.c:1335 (co_MsqFindMessage@28))>
<win32k.sys:6f123 (subsystems/win32/win32k/ntuser/message.c:804 (@co_IntPeekMessage@20))>
<win32k.sys:6f5f1 (subsystems/win32/win32k/ntuser/message.c:1070 (@co_IntWaitMessage@12))>
<win32k.sys:6f663 (subsystems/win32/win32k/ntuser/message.c:1181 (NtUserGetMessage@16))>
<NTOSKRNL.EXE:b7b54 (ntoskrnl/ke/i386/trap.s:244 (KiFastCallEntry))>
<ntdll.dll:65ad>
<winlogon.exe:329a>
<winlogon.exe:5538>
<winlogon.exe:5319>
<winlogon.exe:543d>
<00000000>
kdb:>