Outlook not shutting down properly is most likely caused by an add-in
failing to release the outlook.exe process. Applications that are known to
do this are virusscanner, anti-spam software, WinFAX and synchronisation
software. Disable all your add-ins and enable them one by one to find the
one that is causing it. Also see;
http://www.howto-outlook.com/faq/outlookdoesntclose.htm

Signature
Robert Sparnaaij [MVP-Outlook]
www.howto-outlook.com
Tips of the month:
-What do the Outlook Icons Mean?
-Create an Office 2003 CD slipstreamed with Service Pack 1
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> I have Office XP and recently (2 months) when closing Outlook is shuts
> down,but in task manager it is still running.
> I have tried uninstalling and reinstalls with no better results. I have
> all
> 3 service packs installed.
> Any help would be appreciated.
Thank You ,I`ll try this.