I thought this was an interesting glitch, I was installing the "Scan Life" application on my iPhone (the app was a waste of time by the way, didn't work), and it started to load the application. It never really downloaded it, it sat there saying loading. So after a few moments of waiting I decided to try to restart the download. it added a second scanlife icon next to the previous one and began loading and installing, when it was done the original one I had started installing disappeared and was replaced by movable blank space. I started playing with it and found that I could move it by moving other icons around it. I then decided to see how to get rid of it so I reset the phone it was still there, the only way I found to remove it was to delete and reinstall the application.