How do i fix my camara roll problem?

i am currently using ios5 and when i take a picture, it minimized into the camara roll. but when i went to look at it in the camara roll, its not there or anywhere. so i did some researching and i read that doing a restore would fix the problem. so i did and then restored my pictures and all my files back, and the same problem happened. so i did more reading and tryed to just delete all of my pictures. and still nothing. i take the picture it appears in the camara roll but in a few seconds it dissapears.
please help me with this problem.