Last week when we were at Magic Kingdom we went back at night to see Spectromagic and Wishes. That night the CM's were standing at the entrance of the Monorail and directing everyone to take the ferry. They were telling everyone the monorails were "running slow"

We never found out the reason but we rode the monorail after that with no problems and even got to ride with the driver on Mon (the highlight of the trip for DH!)