IPhone 5 iCloud back up problems?

I just got the iPhone 5 today and before I activated I backed up with iCloud on my 4s. Now I have everything on my new phone except some pictures. It's said it's downloading 48 of 680 and has said that for 7 hours. What can I do to get the rest of my pictures

I would restart the back with iCloud to your iPhone 5 and make sure all of the pictures from the iPhone 4S uploaded to iCloud.