Supplemental update downloaded yesterday and no changes to the time it took to shutdown. Today, less than 24 hours later, using the Control > Option > Command > Media Eject key and the shutdown is now 3/4 seconds. Tried this 5 times now to be sure and its still 3 to 4 seconds shutdown. Unknown if its the Supplemental download that was released from Apple yesterday that had something to do with it, but it's now working. Anyone else ?