It has been 5 hours of updating my windows. Why is it
taking so long? It is still on Windows XP Service Pack1
(Express).

are you following these directions?

Windows update checklist
http://www3.telus.net/dandemar/Updtcl.htm

Download Windows Updates and Drivers from the Windows
Update Catalog
http://support.microsoft.com/?kbid=323166

Doing the updates on regular basis.
Every "second" Tuesday of the month according to
microsoft.
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