In Windows XP's "Windows Update" feature it tells me I have two "Critical Updates" to install. I tell it do install them and it download and installs them. Then it tells me that they failed to install and to do it again. This has been going on since Jan 27.
I followed the advice in Microsoft's knowledge base article 319109 to no avail. The Critical Update numbers are as follows:
810833 Security Update (Windows XP)
329170 Security Update (Windows XP)