As with all the "Windows XP Hangs on Shutdown" I have the same problem but none of the sulution I found helps.
I am working on a Acre notebook with XP PRo SP2. The trouble started when we installed SP3.
I have tested from safe mode and that works!
I have installed The hotfix from the article in http://support.microsoft.com/kb/884882/en-us.
I have installed Hive Cleanup.
The Pc is Virus free.
Just before I reload is there anything that I'm missing?