Memory card is protected (reset switch on memory

SOURCE: It says my memory card is protected

On the side of the memory card, there is a small slider that locks and protects the memory card from being overwritten. Yours may be in the locked position. Simply pull out your memory card form your camera and unlock your memory card by sliding the tab.
Hope this helps,
Andrew
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SOURCE: "Memory card is protected"

This error message indicates that the memory card is locked. The switch on the memory card is in the write-protect position. Reset the switch as shown on the camera screen.

SOURCE: Screen is saying Memory card is protected (reset switch on memory card) and it won't take pictures.

if you have tried to set the switch to unlocke on your SD card, and still have this problem, you may need to open your camera to check the SD card slot.
this tips might help:
http://www.myfixtips.com/blog/uncategorized/how-to-fix-a-%e2%80%98card-locked%e2%80%99-problem-125.htm

SOURCE: Kodak Easyshare M320 Memory Card Protected

If there is a slide switch on the side of the card, make sure it is "unlocked".

SOURCE: Memory card is protected. How can i reset switch

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. If the switch is already in the proper position, slide it fully the other way and then back again.