new photos are not uploading to photostream
i have a iphone 4s, ipad 2 and a MacPro using iPhoto. Yesterday my devices stopped uploading NEW pictures to PhotoStream. I've tested it by taking pictures with each device and waiting to see if it shows up in photostream. Nothing works. Is still have the old photostream pics, but new pictures are NOT uploading to photostream.
iPhone 4S, iOS 6