<<Win98 SE>>
er... I think Bugalaman has XP, look he says so.
Interestingly Bugalaman, I've started getting the same problem on my Vaio GR215MP (XP Pro). But, only after I loaded my usual software on it - not after I loaded the ATI drivers. I tried resetting the laptop to factory default, and it had no problems with shutting down. It's only after I added more application software that shutdown started locking up. My current suspect is probably something that you don't have anything to do with, but it's worth uninstalling the current display driver, reinstalling the old display driver, see if it still happens, and if it does, try removing your memory/tray-resident software one by one.