I think there is something wrong with it. I formatted it, went and took 3 pix, came back and put in the card reader and I got a message that it had to be forematted before it could be used. I followed the directions on the screen (after all, there was nothing on it other than those 3 pix, so not a big deal if they were wiped out), put it back in, went and took 3 more pix. Put back in the card reader..........same thing.
I should try it with another card and see if it is a card issue or a camera issue. I've been having trouble taking video with it and will probably have to send it to Canon. It's a 60D.