My camera says card locked

you can recover deleted photos with asoftech photo recovery program, here's a useful tutorial that helped me before
http://www.asoftech.com/articles/how-to-recover-lost-photos-from-memory-card.html

Look at the memory card. SD cards have a slide switch along one edge. The position farthest from the metal contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

Look at your memory card. SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

Wow! You have 400 pics on the internal memory. That must be some huge internal memory. Anyway, to delete them, remove the card from the camera...go into the menu and find "format"...follow the on-screen instructions.

The best way to recover deleted photos from digital camera is to use some camera photo recovery software, recommended asoftech photo recovery which helped me before. You can follow steps in this tutorial
Steps to recover photos from digital camera
It helped me before, easy to follow and works well. hope that it helps you.

Hi,
Have checked that the write protect is off?
To remove the write protect lock, take the card out of the camera, face the card towards you, look for a small white tab on the left hand side of the card, to unlock it push the tab down, it will be at the side of the card like this .



Regards.

check the memory card if theres a little switch on the side of it try moving it to its other position and try then

The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.


Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use any photo cataloging program such as Windows Photo Gallery or Picasa.

I have had success with this... Download the photo recovery program
http://www.asoftech.com/apr/

You have to use a card reader either on your computer or an external USB card reader. Put the card in the card reader, open the recovery program, then select the drive where files are deleted, then press "Start" and wait for it to do it's magic.

http://www.retrevo.com/support/Samsung-S500-Digital-Cameras-manual/id/563ag625/t/2/