(QEmu 0.9.1)
livecd-73186-dbg.iso
"kdb:> set condition * first always"

Case 2 (Mouse, hover) :

...

(dll/win32/userenv/profile.c:891) Error: 2
shellpath.c:1459: _SHGetUserProfileDirectoryW returning

Entered debugger on first-chance exception (Exception Code: 0xc0000005) (Page Fault)
Memory at 0x00000001 could not be read: Page not present.
kdb:> bt
Eip:
* <shell32.dll:8bbfa (sdk/lib/atl/atlcomcli.h:94 (CMenuSFToolbar::SetShellFolder))>
Frames:
* <shell32.dll:83642 (dll/win32/shell32/shellmenu/CMenuBand.cpp:680 (CMenuBand::SetShellFolder))>
* <shell32.dll:9a5bb (dll/win32/shell32/shellmenu/CStartMenu.cpp:195 (CShellMenuCallback::CallbackSM))>
* <shell32.dll:848b6 (dll/win32/shell32/shellmenu/CMenuBand.cpp:772 (CMenuBand::_CallCB))>
* <shell32.dll:84951 (dll/win32/shell32/shellmenu/CMenuBand.cpp:749 (CMenuBand::_CallCBWithItemId))>
* <shell32.dll:8a19e (dll/win32/shell32/shellmenu/CMenuToolbars.cpp:1261 (CMenuStaticToolbar::InternalPopupItem))>
* <shell32.dll:8b322 (dll/win32/shell32/shellmenu/CMenuToolbars.cpp:1116 (CMenuToolbarBase::PopupItem))>
* <shell32.dll:8b802 (dll/win32/shell32/shellmenu/CMenuToolbars.cpp:537 (CMenuToolbarBase::OnPopupTimer))>
* <shell32.dll:9a1d5 (dll/win32/shell32/shellmenu/CMenuToolbars.h:138 (CMenuToolbarBase::ProcessWindowMessage))>
* <shell32.dll:a95e6 (sdk/lib/atl/atlwin.h:1382 (CWindowImplBaseT<CToolbar<long unsigned int>, ATL::CWinTraits<1442840576ul, 0ul> >::WindowProc))>
* <user32.dll:60509 (:0 (CALL_EXTERN_WNDPROC))>
* <user32.dll:544b7 (win32ss/user/user32/windows/message.c:1522 (IntCallWindowProcW))>
* <user32.dll:5487d (win32ss/user/user32/windows/message.c:1769 (IntCallMessageProc))>
* <user32.dll:54fd0 (win32ss/user/user32/windows/message.c:2022 (DispatchMessageW))>
* <explorer.exe:602e (base/shell/explorer/traywnd.cpp:2982 (TrayMessageLoop))>
* <explorer.exe:1569 (base/shell/explorer/explorer.cpp:175 (StartWithDesktop))>
* <explorer.exe:16ba (base/shell/explorer/explorer.cpp:222 (wWinMain))>
* <explorer.exe:10f58 (sdk/lib/crt/startup/crt0_w.c:24 (wmain))>
* <explorer.exe:10024 (sdk/lib/crt/startup/crtexe.c:308 (__tmainCRTStartup))>
* <explorer.exe:1006d (sdk/lib/crt/startup/crtexe.c:168 (wWinMainCRTStartup))>
* <kernel32.dll:10442 (dll/win32/kernel32/client/proc.c:472 (BaseProcessStartup))>
<00000000>
kdb:> cont
Unhandled exception
ExceptionCode:    c0000005
Faulting Address:        1
CS:EIP 1b:7b23bbfa
DS 23 ES 23 FS 3b GS 0
EAX: 00000000   EBX: 00243db0   ECX: 00243db0
EDX: 7c92c822   EBP: 0022f788   ESI: 00000001   ESP: 0022f778
EDI: 00000000   EFLAGS: 00010202
Address:
   7b1b0000+8bbfa      C:\reactos\system32\shell32.dll
Frames:
   7b1b0000+83647      C:\reactos\system32\shell32.dll
   7b1b0000+9a5c0      C:\reactos\system32\shell32.dll
   7b1b0000+848bb      C:\reactos\system32\shell32.dll
   7b1b0000+84956      C:\reactos\system32\shell32.dll
   7b1b0000+8a1a3      C:\reactos\system32\shell32.dll
   7b1b0000+8b327      C:\reactos\system32\shell32.dll
   7b1b0000+8b807      C:\reactos\system32\shell32.dll
   7b1b0000+9a1da      C:\reactos\system32\shell32.dll
   7b1b0000+a95eb      C:\reactos\system32\shell32.dll
   7c3e0000+6050e      C:\reactos\system32\user32.dll
   7c3e0000+544bc      C:\reactos\system32\user32.dll
   7c3e0000+54882      C:\reactos\system32\user32.dll
   7c3e0000+54fd5      C:\reactos\system32\user32.dll
     400000+6033       C:\reactos\explorer.exe
     400000+156e       C:\reactos\explorer.exe
     400000+16bf       C:\reactos\explorer.exe
     400000+10f5d      C:\reactos\explorer.exe
     400000+10029      C:\reactos\explorer.exe
     400000+10072      C:\reactos\explorer.exe
   7cc70000+10447      C:\reactos\system32\kernel32.dll
(sdk/lib/rtl/actctx.c:3072) Could not find dependent assembly Microsoft.Windows.Common-Controls (6.0.0.0)
WARNING:  MmLockPageableDataSection at ntoskrnl/mm/ARM3/drvmgmt.c:62 is UNIMPLEMENTED!
fixme:(win32ss/user/user32/misc/dllmain.c:362) ClientThreadSetup is UNIMPLEMENTED!
WARNING:  MmUnlockPageableImageSection at ntoskrnl/mm/ARM3/drvmgmt.c:39 is UNIMPLEMENTED!