In the past 2-3 months, I've had 4 cards getting erased for no reason. I put them in my camera and they come up unreadable and asking if I want to Format them. Does anyone know what would cause this. The most current one is only acuople weeks old and removed from the camera to put in the card reader, maybe 4-5 times. My camera is a Olympus C-3030. At first I thought it may have something to do with Static Electricity...but the last card has barely been used, so now it has me thinking that it may be the camera. Can a camera do this to Cards?