I have had this camera for almost a year now and the memory card as well. I use it all the time and have never had an issue. Today, all of a sudden, my computer says that I “need to format disk F before I can use it”. When I try to format, it won’t let me! I have tried the card in another computer with the same result, but I also tried another disk, in my same computer with the same message, yet when I use it on the other computer, there are no problems. I am at a loss.