I'll try.
ISecurity Update for Microsoft XML Core Services 4.0 Service Pack 2 (KB954430)
Update type: Important
A security issue has been identified in Microsoft XML Core Services (MSXML) that could allow an attacker to compromise your Windows-based system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer. Once you have installed this item, it cannot be removed.
I copied and pasted it from my windows update history. I have Vista Premium and as soon as I update it, the icon appears again on my start menu to update a new one and it's the very same one--it is over and over the same one. It really bugs me. Is it a different one even tho it has the same number, etc.