I used to have a code in my functions.php for restricting writers to view only their own media, but that code doesn't work since I upgraded wordpress to 3.5 because of the New Media Uploader.
I am using a adjusted version (by myself) of WP User Frontend. Writers can write posts from frontend (using the wp_editor function). Can you help me out?
Extra question: I'd also like writers not to be able to make a gallery and featured image. It really has to be simple (so actually only uploading and inserting image). Can you help me out on that too?