Win 7 - KB954430 installation issue
Recently Windows update had a security update for Microsoft XML Core Services 4.0 Service Pack 2 as KB954430. Like all updates I got prompted to install it, which I did and happily continued to work. But this update had a mind of its own and it would keep popping up again and again and again....
Every time I would shutdown my Win 7 Laptop, I would see the exclamation icon on the shutdown button showing that an update was pending installation. I also went to Windows update screen and installed it directly from there. Every time it would give a success message, but would popup again shortly. So much so, that I have it reflecting close to 30 times in my update history.
Finally searching online gave some hints. Most queries were for Vista, but I assumed that the solutions may work for Win 7 as well. What worked for me finally was to go to add remove programs wizard, uninstalled MSXML 4.0 SP2 (KB954430) and then installed this update again. Since then, I have been able to rest in peace :-).