I had this issue this morning for almost 2 hours. Never was able to get as the start button was grayed out and couldn't select it, than after about 10-15 seconds an server error would come up.

Eventually I had to go to work so never made it in. Let's just be patient for Wednesday as this is when they will fix the data centers and server loads. Hey, they are giving us free time as compensation, we just need to let them do what they need to do. If they can never get it right, than we can torch 'em.