Whats up with my concrete porch??

Attachment 37283 (http://www.doityourself.com/forum/attachments/bricks-masonry-cinder-block-paving-walking-stones-asphalt-concrete/37283-whats-up-my-concrete-porch-p8280284.jpg)Attachment 37284 (http://www.doityourself.com/forum/attachments/bricks-masonry-cinder-block-paving-walking-stones-asphalt-concrete/37284-whats-up-my-concrete-porch-p8280285.jpg)Attachment 37285 (http://www.doityourself.com/forum/attachments/bricks-masonry-cinder-block-paving-walking-stones-asphalt-concrete/37285-whats-up-my-concrete-porch-p8280287.jpg)Attachment 37282 (http://www.doityourself.com/forum/attachments/bricks-masonry-cinder-block-paving-walking-stones-asphalt-concrete/37282-whats-up-my-concrete-porch-p8280283.jpg) Hello folks! hope all is well with u guys. I have a concrete porch in the back of my house. it was poured( i guess it was poured) on top of a cinder block wall which is about three feet high. In the past 4 years one corner of the concrete porch has started to rise up. The whole porch is 16 feet by 8 feet with an expansion joint in the center.The right half of the porch is where this problem is occurring. there is no subsidence of concrete on the corner diagonally opposite to this problematic corner. the concrete on the corner diagonally opposite is smooth and flush just with a crack. I am unable 2 post pics because this website keeps telling me picture loading error.