GFD- or anyone else who may know- how come all of a sudden my SD cards when I plug them into my computer tells me that they need to be formatted? I've been told to NOT do this b/c it will erase all the pics on the card. How did they work one time and now not able to work. Another problem I'm having is that when I go to delete the pics off the SD card, it won't let me. WHY THE HECK NOT?!?! <--- sorry that's what I yell at the computer! The geniouses that made SD cards are such wonderful people. I have not changed a SINGLE THING with what I've always done.