Due to the way the packages are handled, and due to their exclusion from Windows XP SP3, it is typically a good idea to install the Universal Audio Architecture (UAA) High Definition Audio class driver version 1.0a hotfix (KB
888111) if you are using a newer HD audio chipset. If you are in a pinch to download this hotfix, you can find it on Lenovo's site
here.
If you want to enable LLTD (Link Layer Topology Discovery) responder support, install KB
922120, and then install SP3.
This blog entry is due to me trying to install both of these hotfixes after installing one of the latest XP SP3 builds and discovering that their install routine blocked their installation after I put SP3 on the machine. I simply uninstalled the SP3 build, installed the hotfixes in question, and then reinstalled the new SP3 build. Time consuming, but at least I know it works. I am hoping at some point that Microsoft will release updated versions of these hotfixes that can be applied to SP3.
I am actually a little surprised that they are not included with SP3.