When testing out the client_max_body_size directive on the wiki and in the original russian docs it says it can be used in http, server, or location. But in testing it seems that it only works in http or server and location is ignored. I did some basic tests with config file moving the directive around and never got it to work inside a location block. this was original noticed at http://forum.slicehost.com/comments.php? DiscussionID=1714&page=1#Item_13 the person there was using nginx 0.5.x while i tested it on 0.6.29 (not 30 as it was just released) and still had this issue.