404 errors in Admin panel

Over the last few days i have been receiving a lot of 404 errors when i use the admin panel. Mainly when i am in bot management and am adding bots, works for about 10 or so, then i get 404 errors when i try to add more, also today i tried to delete inactive members,about 40 or so at one, when i try to do it i get 404 errors. Could this be the database playing up or is a file missing or the permissions are wrong. As far as i can see, these problems should not be connected <img>