Windows 98SE Shutdown Issue

I have an issue that I am trying to resolve for a family member.
He has Win 98SE.
The issue is that when he goes to shutdown the computer,
it closes programs as normal (as far as I can tell), but when it gets to what looks like a old custom logoff screen, it just hangs there and will not shut off until he forces it to by pressing the power button.
I know the system is clean as I did a sweep and clean maint with a lot of programs ( CCleaner, Ad-Aware, Spybot, virus scans etc,etc).
It is probably something simple and I am hoping that someone can point me in the right direction..

Thanks,

Wax

This knowledge base article may help. Problems Shutting Down Windows 98 Second Edition.

If none of the solutions in that article solve the issue,try installing the Windows 98 Second Edition Shutdown Supplement.

Direct download here. | Related KB article here.

There are also some more possible fixes here

Thanks for the info...
I'll post results back here probably nex week...

Thanks to all that helped. The answer was as simple as downloading the
Windows 98 Second Edition Shutdown Supplement,
Worked like a charm...
Thanks,
Wax