I just upgraded NextGen Gallery to the 2.0 version. This caused the admin Menus area to result in the white screen of death. I read on other posts that the white screen in the wp-menus area can be caused by plugins, customer post types etc. So I disabled the NextGen plugin (as that was the only update I had made on the site) and the menu worked. When I reenabled NextGen the menus went back to white screen of death.