Memory card write protected
Every memory card I put in says write protected when they are not,
h1313e23, Try formatting your card first. If you are having problems removing the memory cards write protection, but have already adjusted the physical switch, then another option is to format the card. Put the card in your computer and format it to Fat-16 or Fat-32, depending on your camera. Found this info. from link below. Check out the 2 attached trouble shooting links.
I have heard of instances of where there may be a little piece of plastic or debri which may have come off a previous card that lodges itself in the slot. This may be a little tricky, blow the card slot out with compressed air and try, or ((carefully and gently)) do not want to damage delicate pins, insert a tooth pick in card slot and see if you can get anything to drop out. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.