WindowsUpdate not working?

From different machines XP/2k the scan stops at 0%, so infact it doesn't start at all. I have had this issue personally with a laptop and I found the fix over at binks' site:
http://www.windowsxp.nu/


Also if you install win2ksp3 the Windows Update program breaks with the error code "0x800A138F", then you will need to execute the below procedure to fix the problem.

RESOLUTION:

go to Start, then Run Type in "regsvr32 iuctl.d l l /u" to unregister the program
Find iuctl.d l l and iuengine.d l l and delete all instances of them
Here is an article in WinNetMag with more on this issue:
http://www.w2knews.com/rd/rd.cfm?id=020826RN-W2K_SP3


Enjoy,
that should fix it.
USE THIS AT YOUR OWN RISK.

Also this may or may not apply to many of you.