We all having a big problem that WinXP take so long time to shutting down
here is a tip for it to shutting down WinXP faster
When a user shuts down Windows XP, first the system has to kill all
services currently running. Every once in a while the service does not
shut down instantly and windows gives it a change to shut down on its own
before it kills it. This amount of time that windows waits is stored in
the system registry. If you modify this setting, then windows will kill
the service earlier. To modify the setting, follow the directions below:

Click on Start, and then goto run, type REGEDIT

Navigate to HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control.
Click on the "Control" Folder.
Select "WaitToKillServiceTimeout"
Right click on it and select Modify.
Set it a value lower than 2000 (Mine is set to 200).

Its workin fine with me.....Let me know if it's working with you?

eNjOy ...........