Hey I don't know if there is another post for this or not, but i noticed a bug today on my iPhone 4. Well i was downloading apps and placed a bunch of them in folders and after doing so I looked in the folders and they were empty and then the YouTube icon was gone. I was scared something went wrong so i rebooted it and the result was the same. I restored it on iTunes and now its fine...but I'm still worried about it. Anyone know what went wrong? I forgot to take a screenshot of the empty folders, but took one for the YouTube app.