I suspect this situation is one for the 'Left hands and right hands' department.

Each patch probably requires an individual reboot to register and it looks to me like the department that coordinates the updates, which were written by the O/S and MSIE departments, either didn't test-download the already signed-off patches, or didn't communicate particularly well with the department which maintains the Updates webpages. That's what I think, anyway, but it's not really my department.
