Currently running build 5608 on 10.5.3. When I shut down Windows, the updates that have downloaded automatically appear to begin installation (1 of 7), but never gets past 1 before shutting down. It appears that they are not installing as this happens every time I exit Windows. Have searched the forums and googled as well, but can't find a resolution. This is happening on two Macbook Pros in our office (same issue on both).