I've had the Samsung L200 with the same Panasonic 1GB memory card for the last 3 years and it's been great, but all of a sudden today it started saying 'memory full' after only taking a few pictures. I cleared all of the pictures off the card and now it will only take 4 pictures and then says the memory is full. I've taken the memory card out and tried reformatting but that didn't help.

Had the same problem, video card went bad. Replaced with newer faster model.

Try putting the memory card in a USB card reader attached to your computer, which should see it as another drive. Write-protect the card first.

Have you actually formatted the card in the camera ? Just copying the photos does not remove them from the card

ALTERNATE WAY TO TRANSFER VIDEOS AND PHOTOS TO COMPUTER
If your videos and photos are stored on the memory card, then remove the memory card from the camera and insert it into an USB memory card reader. Connect this USB memory card reader and memory card into the USB port of your working computer. Your computer will see this as an USB Mass Storage Device or an external storage device; you can then open the folder on the memory card and copy the photos to your computer. Memory card reader is a handy device and is inexpensive. You can copy photos from other cameras and you can also download photos off your memory card to someone else's computer without the need of installing any programs.

Are you saving your pictures to the phone's built in memory or to the removable flash card?

I would recommend shutting your phone off (hold the power button down for 7 seconds), reseating your flash card, then powering it back up.

Hi
Please check your cameras capability to support larger sized SD cards.It may not support those two SD cards.Also check for slide locks on the side of the cards and slide them to 'open' before inserting.

Hope it helps.Thanks!

Consider NOT connecting your camera to your computer.
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 Picasa.

1)disconnect the battery for 5-10 min. Then replace it &try to read card's info. OR 2)Select "restore factory settings" then try to read or 3)use a memory card reader to 1st backup info into a pc then format it by the pc.

Base from the description of your problem it seems that your memory got corrupted but just to make sure we may need to connect the camera to your computer and check it from there or connect the memory card to a card reader and access it and see if how many photo are there.

If the old photo are there better save those to your computer and then format your memory card from the camera menu.

The memory card may have developed an error in card logic format.

Save all data from memory card into computer, then format the card clicking right button of mouse on card (removable disk) on computer and select format option.

If you still get the error some time after formatting the card, then card is faulty, get a refund or replacement.

If I was in your shoes I would ask a replacement immediately, if card is really faulty it won't warn you before losing all your data.