i distributed a program which uses camera. some users which have gingerbread have problem in preview panel and its not in the right orientation!!!
i tried camera, ACL, cameraEX and all had the same problem
yes
in samsung ace 2.3.6 i installed cameraEX sample without changing anything. but the result was the same. when i distributed my own application which used cameraEx module some other phones reported the same problem. (just some brands with gingerbread)