I went to bed last night as the computer was in the process of installing 69 updates in a single batch. These updates require 4 steps to install completely, first to download, second to install, third to continue the install during shutdown, and forth to finish the installation during restart of the system -- this take a long time so going to bed was the best bet.
The 69 updates were completed by the time I got up this morning, but guess what -- there were more updates waiting to be installed, the largest group was 17 updated, the biggest was the service pack 2 for Vista. Needless to say, these took the rest of the day.