I too am having the same issue and I am on my 3rd infuse. The first two infuses were from the same store but the third one is from a different store. My music will stop working at random times, my media hub videos will not play, and you tube will not work. When I turn the phone on and off everything is fine for about 12-24 hrs. I do have the software update and thought maybe that would do the trick but no such luck. .....The only option I have left is sending my phone to SAMSUNG for them to look at it but I don?t see how that will work because I keep my sim and memory card. All of my media is located on my internal memory at this time. It was on my external card for a while and I thought maybe that was the issue but it was not..