Windows 2003 server EventView error: Event ID 1517

Hi,

I am running Windows 2003 small business servers. I have clients using both
windows XP and Vista basic home.

Here is my issue: It's started on July 2, 2007. Every day about every 2-4
hours a get an error in the event view: EventID 1517

Windows saved user domain\username registry while an application or service
was still using the registry during log off. The memory used by the user's
registry has not been freed. The registry will be unloaded when it is no
longer in use.

I downloaded the Microsoft UPHClean-Setup but could not install it on my
laptop running Windows Vista.

Anyone know how to resolve this issue? My server is locking up because of
this issue.

Thanks