Do you have a program called Serious Samaurize? If so its window frame is called Cicero UI Wnd. Or you can run this reg fix:
http://www.kellys-korner-xp.com/regs_edits/shutdown.reg
It will auto close any tasks that hang during shutdown.
code:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management]
"ClearPageFileAtShutdown"=dword:00000001
[HKEY_USERS\.DEFAULT\Control Panel\Desktop]
"AutoEndTasks"="1"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control]
"WaitToKillServiceTimeout"="1000"
/ 
