I'm also having problems opening photos today. If I let the cursor rest for a second over the photo, the screen view goes dark (not black, but dark), and the screen freezes. The only way out is to hit the back key. If on the other hand, I don't pause, and hit enter immediately after my cursor is over the picture, I get an enlarged view of just the one pic I clicked, but there is no little menu that allows you to move to the other photos in the sequence.
This forum is getting hard to use again. Can an administrator chime in soon and let everyone know what is going on?